SINEX - Solution (Software/technique) INdependent EXchange Format Version 2.00 (May 24, 2002) A P P E N D I X I S I N E X V E R S I O N 2 . 0 0 D E T A I L F O R M A T D E S C R I P T I O N 1. INTRODUCTION 2. DATA STRUCTURE 3. HEADER LINE 4. FILE/REFERENCE BLOCK 5. FILE/COMMENT BLOCK 6. INPUT/HISTORY BLOCK 7. INPUT/FILES BLOCK 8. INPUT/ACKNOWLEDGEMENTS BLOCK 9. NUTATION/DATA BLOCK 10. PRECESSION/DATA BLOCK 11. SOURCE/ID BLOCK 12. SITE/ID BLOCK 13. SITE/DATA BLOCK 14. SITE/RECEIVER BLOCK 15. SITE/ANTENNA BLOCK 16. SITE/GPS_PHASE_CENTER BLOCK 17. SITE/ECCENTRICITY BLOCK 18. SOLUTION/EPOCHS BLOCK 19. BIAS/EPOCHS BLOCK 20. SOLUTION/STATISTICS BLOCK 21. SOLUTION/ESTIMATE BLOCK 22. SOLUTION/APRIORI BLOCK 23. SOLUTION/MATRIX_ESTIMATE BLOCK 24. SOLUTION/MATRIX_APRIORI BLOCK 25. SOLUTION/NORMAL_EQUATION_VECTOR BLOCK 26. SOLUTION/NORMAL_EQUATION_MATRIX BLOCK 27. FOOTER LINE 1. Introduction This document describes the Software Independent Exchange (SINEX) format. It started in early 1995 with an effort by a number of IGS participants and it was designed to be easily extended. For the new IERS structure, operational since January 1, 2001, and due to the use of SINEX by the ILRS (pilot project 'positioning and earth orientation') and the IVS as well, some extensions were made with the purpose to have a unique format description for all techniques. 2. Data Structure Each SINEX line has at most 80 ASCII characters. The SINEX file is subdivided in groups of data called blocks. Each block is enclosed by a header and trailer line. Each block has a fixed format. The blocks contain information on the file, its input, the sites and the solution. All elements within a line are defined. A character field without information will have "-"s within its field and a missing numerical element will have a value of 0 within its field. Therefore the SINEX file is accessible "column- wise" as well as "line-wise". Character fields should be left hand justified whenever applicable. The first character of each line identify the type of information that the line contains. Five characters are reserved. They have the following meaning when they are at the beginning of a line, they identify: Character Definition "%" Header and trailer line, "*" Comment line within the header and trailer line, "+" Title at the start of a block "-" Title at the end of a block " " Data line within a block No other character is allowed at the beginning of a line! A SINEX file must start with a header line and ends with a footer line. The following blocks are defined: FILE/REFERENCE FILE/COMMENT INPUT/HISTORY INPUT/FILES INPUT/ACKNOWLEDGEMENTS NUTATION/DATA PRECESSION/DATA SOURCE/ID SITE/ID SITE/DATA SITE/RECEIVER SITE/ANTENNA SITE/GPS_PHASE_CENTER SITE/ECCENTRICITY BIAS/EPOCHS SOLUTION/EPOCHS SOLUTION/STATISTICS SOLUTION/ESTIMATE SOLUTION/APRIORI SOLUTION/MATRIX_ESTIMATE {p} {type} SOLUTION/MATRIX_APRIORI {p} {type} SOLUTION/NORMAL_EQUATION_VECTOR SOLUTION/NORMAL_EQUATION_MATRIX {p} Where: {p} L or U {type} CORR or COVA or INFO These block titles are immediately preceded by a "+" or a "-" as they mark the beginning or the end of a block. The block titles must be in capital letters. After a block has started(+) it must be ended(-) before another block can begin. The general structure is as follow: %=SNX........... (Header line)----------| ............. | +(BLOCK TITLE)-------------| | ............ | | ............ | | ............ | | -(BLOCK TITLE)-------------| | ............. | +(BLOCK TITLE)-------------| | ............ | | ............ | | ............ | | -(BLOCK TITLE)------------ | | ............. | %ENDSNX (Trailer line)---------| Most fields within a SINEX line are separated by a single space. In the following sections, each SINEX line is defined by its field name, a general description and the (FORTRAN) format. A comment line (not to be confused with the FILE/COMMENT Block) can be written anywhere within the header and the footer line. All comment lines must start with a "*" in the first column. With the use of this character information can be hidden from the software reading the file without deleting it from the file. A comment line is defined as follow: ___________________________________________________________________ |______________________C_O_M_M_E_N_T___D_A_T_A___L_I_N_E____________| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | Comment | Any general comment relevant to | 1H*,A79 | | | the SINEX file. | | |________________|___________________________________|______________| | | | 80 | |______________| Some fields are found in several blocks. To keep the description short, they are described in detail here, and will be referred to in the sections with additional information added when necessary. The fields defined below will be referenced to by putting them within square brackets [] when encountered in the following sections. ____________________________________________________________________ | | | | |__Field_________|______Description___________________|___Format_____| | | | | | Time | YY:DDD:SSSSS. "UTC" | I2.2, | | | YY = last 2 digits of the year, | 1H:,I3.3, | | | if YY <= 50 implies 21-st century, | 1H:,I5.5 | | | if YY > 50 implies 20-th century, | | | | DDD = 3-digit day in year, | | | | SSSSS = 5-digit seconds in day. | | |________________|____________________________________|______________| | | | | | Constraint Code| Single digit indicating the | A1 | | | constraints: | | | | 0-fixed/tight constraints, | | | | 1-significant constraints, | | | | 2-unconstrained. | | |________________|____________________________________|______________| | | | | | Parameter Type | Type of parameter. | A6 | | | List of allowed parameters and the | | | | units provided: | | | | | | | | STAX - station X coordinate, m| | | | STAY - station Y coordinate, m| | | | STAZ - station Z coordinate, m| | | | VELX - station X velocity, m/y| | | | VELY - station Y velocity, m/y| | | | VELZ - station Z velocity, m/y| | | | XGC - geocenter X coordinate, m| | | | YGC - geocenter Y coordinate, m| | | | ZGC - geocenter Z coordinate, m| | | | RS_RA - radio source right | | | | ascension, rad| | | | RS_DE - radio source declin., rad| | | | RS_RAR - radio source right | | | | ascension rate, rad/y| | | | RS_DER - radio source | | | | declination rate, rad/y| | | | RS_PL - radio source parallax, rad| | | | LOD - length of day, ms| | | | UT - delta time UT1-UTC, ms| | | | XPO - X polar motion, mas| | | | YPO - Y polar motion, mas| | | | XPOR - X polar motion rate, mas/d| | | | YPOR - Y polar motion rate, mas/d| | | | NUT_LN - total nutation in | | | | longitude, rad| | | | NUT_OB - total nutation in | | | | obliquity, rad| | | | NUTRLN - nutation rate in | | | | longitude, rad/d| | | | NUTROB - nutation rate in | | | | obliquity rad/d| | | | SAT__X - Satellite X coord., m| | | | SAT__Y - Satellite Y coord., m| | | | SAT__Z - Satellite Z coord., m| | | | SAT_VX - Satellite X velocity, m/s| | | | SAT_VY - Satellite Y velocity, m/s| | | | SAT_VZ - Satellite Z velocity, m/s| | | | SAT_RP - Radiation pressure, | | | | SAT_GX - GX scale, | | | | SAT_GZ - GZ scale, | | | | SATYBI - GY bias, m/s2| | | | TROTOT - wet + dry Tropo delay, m| | | | TRODRY - dry Tropo delay, m| | | | TROWET - wet Tropo delay, m| | | | TGNTOT - troposphere gradient | | | | in north (wet + dry), m| | | | TGNWET - troposphere gradient | | | | in north (only wet), m| | | | TGNDRY - troposphere gradient | | | | in north (only dry), m| | | | TGETOT - troposphere gradient | | | | in east (wet + dry), m| | | | TGEWET - troposphere gradient | | | | in east (only wet), m| | | | TGEDRY - troposphere gradient | | | | in east (only dry), m| | | | RBIAS - range bias, m| | | | TBIAS - time bias, ms| | | | SBIAS - scale bias, ppb| | | | ZBIAS - troposphere bias at | | | | zenith, m| | | | AXI_OF - antenna axis offset, m| | |________________|____________________________________|______________| | | | | | Site Code | - For stations: | A4 | | | Call sign for a site.(It should be | | | | consistent with ITRF, see below). | | | | - For satellites: | | | | Use "PRXX" where XX is the PRN | | | | number. | | |________________|____________________________________|______________| | | | | | Point Code | - For stations: | A2 | | | A two character code identifying | | | | physical monument within a site. | | | | Typically has a code A, but could | | | | vary if the site has more than one | | | | monument. | | | | - For bias parameters: satellite ID| | | | L1, L2 for LAGEOS-1 or -2; | | | | LC for combined LAGEOS; | | | | E1, E2 for Etalon 1 or 2; | | | | EC for combined Etalon; | | |________________|____________________________________|______________| | | | | | Solution ID | Character identifying the solution | A4 | | | given for a point at a site. | | | | "----" applies to all. | | |________________|____________________________________|______________| | | | | | Observation | A single character indicating the | A1 | | Code. | technique(s) used to arrive at the | | | | solutions obtained in this SINEX | | | | file. It should be consistent with | | | | the IERS convention. | | | | This character code may be: | | | | C-Combined techniques used. | | | | D-DORIS, | | | | L-SLR, | | | | M-LLR, | | | | P-GPS, | | | | R-VLBI. | | |________________|____________________________________|______________| Comment: For the official IERS sites the values of the 'Site Code' are listed in ftp://lareg.ensg.ign.fr/pub/itrf/iers_dir.sta 'Per year' means 365.25 days in this context. 3. Header Line (Mandatory) Description The header line must be the first line in a SINEX file. Contents: ___________________________________________________________________ |_____________H_E_A_D_E_R___L_I_N_E_________________________________| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | First Character| Single character '%' in column #1.| A1 | | | No other character than '%' is al-| | | | lowed. | | |________________|___________________________________|______________| | | | | | Second | Single character '=' in column #2.| A1 | | Character | Indicates 'resultant' solution. | | | | No other character than '=' is al-| | | | lowed. | | |________________|___________________________________|______________| | | | | | Document Type | Three characters 'SNX' in columns | A3 | | | 3 to 5. Indicates that this is a | | | | SINEX document. | | |________________|___________________________________|______________| | | | | | Format Version | Four digits indicating the version| 1X,F4.2 | | | of SINEX format used. | | | | '2.00' for this version. | | |________________|___________________________________|______________| | | | | | File Agency | Identify the agency creating the | 1X,A3 | | Code | file. | | |________________|___________________________________|______________| | | | | | [Time] | Creation time of this SINEX file. | 1X,I2.2, | | | | 1H:,I3.3, | | | | 1H:,I5.5 | |________________|___________________________________|______________| | | | | | [Agency Code] | Identify the agency providing the | 1X,A3 | | | data in the SINEX file | | |________________|___________________________________|______________| | | | | | [Time] | Start time of the data used in the| 1X,I2.2, | | | SINEX solution | 1H:,I3.3, | | | Value 00:000:00000 should be | 1H:,I5.5 | | | avoided. | | |________________|___________________________________|______________| | | | | | [Time] | End time of the data used in the | 1X,I2.2, | | | SINEX solution | 1H:,I3.3, | | | Value 00:000:00000 should be | 1H:,I5.5 | | | avoided. | | |________________|___________________________________|______________| | | | | | [Observation | Technique(s) used to generate the | 1X,A1 | | Code] | SINEX solution | | |________________|___________________________________|______________| | | | | | Number of Est- | Number of parameters estimated in | 1X,I5.5 | | timates | this SINEX file. | | | | Mandatory field. | | |________________|___________________________________|______________| | | | | | [Constraint | Single character indicating the | 1X,A1 | | Code] | constraint in the SINEX solution. | | | | Mandatory field. | | |________________|___________________________________|______________| | | | | | Solution | Solution types contained in this | 5(1X,A1) | | Contents | SINEX file. Each character in this| | | | field may be one of the following:| | | | S - all station parameters, | | | | i.e. station coordinates, | | | | station velocities, biases,| | | | geocenter, | | | | O - Orbits, | | | | E - Earth Orientation Parameter| | | | T - Troposphere, | | | | C - Celestial Reference Frame | | | | BLANK | | |________________|___________________________________|______________| | | | 77 | |______________| Relationship with other blocks: This line is duplicated as the resultant line of the INPUT/HISTORY block with the exception of its first character. 4. FILE/REFERENCE Block (Mandatory) Description: This block provides information on the Organization, point of contact, the software and hardware involved in the creation of the file. Contents: ___________________________________________________________________ |__________F_I_L_E___R_E_F_E_R_E_N_C_E___D_A_T_A___L_I_N_E__________| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | Information | Describes the type of information | 1X,A18 | | Type | present in the next field. May | | | | take on the following values: | | | | | | | | 'DESCRIPTION' - Organization(s) | | | | gathering/altering| | | | the file contents.| | | | 'OUTPUT' - Description of the| | | | file contents. | | | | 'CONTACT' - Address of the | | | | relevant contact. | | | | e-mail | | | | 'SOFTWARE' - Software used to | | | | generate the file.| | | | 'HARDWARE' - Computer hardware | | | | on which above | | | | software was run. | | | | 'INPUT' - Brief description | | | | of the input used | | | | to generate this | | | | solution. | | | | | | | | Any of the above fields may be | | | | and in any order. | | |________________|___________________________________|______________| | | | | | Information | Relevant information for the type | 1X,A60 | | | indicated by the previous field. | | |________________|___________________________________|______________| | | | 80 | |______________| 5. FILE/COMMENT Block (Optional) Description: This block can be used to provide general comments about the SINEX data file. Contents: ___________________________________________________________________ |____________F_I_L_E___C_O_M_M_E_N_T___D_A_T_A___L_I_N_E____________| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | Comment | Any general comment providing | 1X,A79 | | | relevant information about the | | | | SINEX file. | | |________________|___________________________________|______________| | | | 80 | |______________| 6. INPUT/HISTORY Block (Recommended) Description: This block provides information about the source of the information used to create the current SINEX file. Contents: ___________________________________________________________________ |__________I_N_P_U_T___H_I_S_T_O_R_Y___D_A_T_A___L_I_N_E____________| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | File Code | Only one of the following charac- | 1X,A1 | | | ters is permitted: | | | | '+' - This character indicates | | | | that the information that| | | | follows identify an input| | | | solution contributing to | | | | this SINEX file. | | | | '=' - This character indicates | | | | that the information that| | | | follows identify the | | | | output solution file. | | |________________|___________________________________|______________| | | | | | Document Type | Three characters 'SNX' in columns | A3 | | | 3 to 5. Indicates that this is a | | | | SINEX document. | | |________________|___________________________________|______________| | | | | | Format Version | Four digits indicating the version| 1X,F4.2 | | | of SINEX format used. | | | | '2.00' for this version. | | |________________|___________________________________|______________| | | | | | [Agency Code] | Identify the agency creating the | 1X,A3 | | | file. | | |________________|___________________________________|______________| | | | | | [Time] | Creation time of this SINEX file. | 1X,I2.2, | | | | 1H:,I3.3, | | | | 1H:,I5.5 | |________________|___________________________________|______________| | | | | | [Agency Code] | Identify the agency providing the | 1X,A3 | | | data in the SINEX file. | | |________________|___________________________________|______________| | | | | | [Time] | Start time of the data used in the| 1X,I2.2, | | | SINEX solution. | 1H:,I3.3, | | | | 1H:,I5.5 | |________________|___________________________________|______________| | | | | | [Time] | End time of the data used in the | 1X,I2.2, | | | SINEX solution. | 1H:,I3.3, | | | | 1H:,I5.5 | |________________|___________________________________|______________| | | | | | [Observation | Technique(s) used to generate the | 1X,A1 | | Technique] | SINEX solution. | | | | | | |________________|___________________________________|______________| | | | | | Number of Est- | Number of parameters estimated in | 1X,I5.5 | | timates | this SINEX file. | | | | | | |________________|___________________________________|______________| | | | | | [Constraint | Single digit indicating the | 1X,A1 | | Code] | constraint in the SINEX solution. | | |________________|___________________________________|______________| | | | | | Solution | Solution types contained in this | 5(1X,A1) | | Contents | SINEX file. Each character in this| | | | field may be one of the following:| | | | S - all station parameters, | | | | i.e. station coordinates, | | | | station velocities, biases,| | | | geocenter, | | | | O - Orbits, | | | | E - Earth Orientation Parameter| | | | T - Troposphere, | | | | C - Celestial Reference Frame | | | | BLANK | | | | | | |________________|___________________________________|______________| | | | 77 | |______________| Comment: The final data line "=" describes the current SINEX file and match the header line with the exception of the first character. 7. INPUT/FILES Block (Optional) Description: This block identify the input files (and the current SINEX file) and allow for a short comment to be added to describe those files. Contents: ___________________________________________________________________ |____________I_N_P_U_T___F_I_L_E_S___D_A_T_A___L_I_N_E______________| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | [Agency Code]| Agency creating the solution des- | 1X,A3 | | | cribed in this data line. | | |________________|___________________________________|______________| | | | | | [Time] | Time of creation of the input | 1X,I2.2, | | | SINEX solution | 1H:,I3.3, | | | | 1H:,I5.5, | |________________|___________________________________|______________| | | | | | File Name | Name of the file containing the | 1X,A29 | | | solution described in the current | | | | data line. | | |________________|___________________________________|______________| | | | | | File | General description of the file | 1X,A32 | | Description | referred to on this data line. | | |________________|___________________________________|______________| | | | 80 | |______________| Comments: There must be exactly one INPUT/FILES data line for every INPUT/HISTORY data line. The final data line must describe this current SINEX file. 8. INPUT/ACKNOWLEDGEMENTS Block (Optional) Description: This block defines the agency codes contributing to the SINEX file. Contents: ___________________________________________________________________ |___I_N_P_U_T___A_C_K_N_O_W_L_E_D_G_M_E_N_T_S___D_A_T_A___L_I_N_E___| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | [Agency Code] | Agency(ies) contributing to this | 1X,A3 | | | SINEX file. | | |________________|___________________________________|______________| | | | | | Agency | Description of agency code. | 1X,A75 | | Description | | | |________________|___________________________________|______________| | | | 80 | |______________| 9. NUTATION/DATA Block (Mandatory for VLBI) Description: This block contains the nutation model used in the analysis procedure. Contents: ___________________________________________________________________ |_________________N_U_T_A_T_I_O_N___D_A_T_A___L_I_N_E_______________| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | Nutation Code | Code for nutation reference: | 1X,A8 | | | IAU1980 | | | | IERS1996 | | | | IAU2000a | | | | IAU2000b | | |________________|___________________________________|______________| | | | | | Comments | General description of the | 1X,A70 | | | nutation model used | | |________________|___________________________________|______________| | | | 80 | |______________| COMMENT: It must be a generally accepted model which is accessible to all users. 10. PRECESSION/DATA Block (Mandatory for VLBI) Description: This block contains the precession model used in the analysis procedure. Contents: ___________________________________________________________________ |_______________P_R_E_C_E_S_S_I_O_N___D_A_T_A___L_I_N_E_____________| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | Precess. Code | Code for precession reference: | 1X,A8 | | | IAU1976 | | | | IERS1996 | | |________________|___________________________________|______________| | | | | | Comments | General description of the | 1X,A70 | | | nutation model used | | |________________|___________________________________|______________| | | | 80 | |______________| COMMENT: It must be a generally accepted model which is accessible to all users. 11. SOURCE/ID (Mandatory for VLBI) Description: This block contains information about the radio sources estimated in the analysis, especially the names used in ICRF and for IERS. Contents: ___________________________________________________________________ |_____________R_A_D_I_O___S_O_U_R_C_E___D_A_T_A___L_I_N_E___________| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | Source Code | Call sign for a source | 1X,A4 | |________________|___________________________________|______________| | | | | | IERS des. | IERS designation of the radio | 1X,A8 | | | source | | |________________|___________________________________|______________| | | | | | ICRF des. | ICRF designation of the radio | 1X,A16 | | | source | | |________________|___________________________________|______________| | | | | | Comments | Comments or other names of the | 1X,A68 | | | radio source | | |________________|___________________________________|______________| | | | 80 | |______________| 12. SITE/ID Block (Mandatory) Description: This block provides general information for each site containing estimated parameters. Contents: ___________________________________________________________________ |_________________S_I_T_E___I_D___D_A_T_A___L_I_N_E_________________| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | [Site Code] | Call sign for a site. | 1X,A4 | |________________|___________________________________|______________| | | | | | [Point Code] | Physical monument used at a site | 1X,A2 | |________________|___________________________________|______________| | | | | | Unique Monument| Unique alpha-nummeric monument | 1X,A9 | | Identification | identification. For ITRF purposes,| | | | it is a nine character DOMES/DOMEX| | | | number (five/six digits, followed | | | | by the single letter 'M' or 'S', | | | | followed by four/three digits) | | |________________|___________________________________|______________| | | | | | [Observation | Observation technique(s) used. | 1X,A1 | | Code] | | | |________________|___________________________________|______________| | | | | | Station | Free-format description of the | 1X,A22 | | Description | site, typically the town and/or | | | | country. | | |________________|___________________________________|______________| | | | | | Approximate | Approximate longitude of the site | 1X,I3, | | Longitude | in degrees(E/+), minutes and | 1X,I2, | | | seconds. | 1X,F4.1 | |________________|___________________________________|______________| | | | | | Approximate | Approximate latitude of the site | 1X,I3, | | Latitude | in degrees(NS/+-), minutes and | 1X,I2, | | | seconds. | 1X,F4.1 | |________________|___________________________________|______________| | | | | | Approximate | Approximate height of the site in | 1X,F7.1 | | Height | metres. | | |________________|___________________________________|______________| | | | 75 | |______________| Comments: For DOMES numbers and station description as well as for Site Codes please refer to ftp://lareg.ensg.ign.fr/pub/itrf/iers_dir.sta If a DOMES number is not available (e.g. for a new station), please ask Zuheir Altamimi for a DOMES number (altamimi@ensg.ign.fr). Use the minus sign for negative approximate longitude or latitude only in the "degrees" component and don't repeat it in the "minutes" and "seconds" component. Following the ISO6709 specification, the range of longitude should be [-180ø +180ø[. 13. SITE/DATA Block (Optional) Description: This block gives the relationship between the estimated station parameters in the SINEX file and in the input files. Contents: ___________________________________________________________________ |_________S_I_T_E___D_A_T_A___L_I_N_E_______________________________| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | [Site Code] | Site Code for solved station | 1X,A4 | | | coordinates. | | |________________|___________________________________|______________| | | | | | [Point Code] | Point Code for solved station | 1X,A2 | | | coordinates. | | |________________|___________________________________|______________| | | | | | [Solution ID] | Solution number to which the input| 1X,A4 | | | in this data line is referred to. | | |________________|___________________________________|______________| | | | | | [Site Code] | Site Code from an input SINEX file| 1X,A4 | | | | | |________________|___________________________________|______________| | | | | | [Point Code] | Point code from an input SINEX | 1X,A2 | | | file. | | |________________|___________________________________|______________| | | | | | [Solution ID] | Solution Number for a Site/Point | 1X,A4 | | | from an input SINEX file. | | |________________|___________________________________|______________| | | | | | [Observation | Observation Code for a Site/Point/| 1X,A1 | | Code] | Solution Number from an input | | | | SINEX file. | | |________________|___________________________________|______________| | | | | | [Time] | Time of start of data for the | 1X,I2.2, | | | input SINEX file. | 1H:,I3.3, | | | | 1H:,I5.5 | |________________|___________________________________|______________| | | | | | [Time] | Time of end of data for the input | 1X,I2.2, | | | SINEX file. | 1H:,I3.3, | | | | 1H:,I5.5 | |________________|___________________________________|______________| | | | | | [Agency Code] | Creation Agency Code for the input| 1X,A3 | | | SINEX file. | | |________________|___________________________________|______________| | | | | | [Time] | Creation time for the input SINEX | 1X,I2.2, | | | file. | 1H:,I3.3, | | | | 1H:,I5.5 | |________________|___________________________________|______________| | | | 71 | |______________| Comment: Times must refer to observation epochs. 14. SITE/RECEIVER Block (Mandatory for GPS) Description: List the receiver used at each site during the observation period of interest. Contents: ___________________________________________________________________ |_____S_I_T_E___R_E_C_E_I_V_E_R___D_A_T_A___L_I_N_E_________________| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | [Site Code] | Site code for which some | 1X,A4 | | | parameters are estimated. | | |________________|___________________________________|______________| | | | | | [Point Code] | Point Code at a site for which | 1X,A2 | | | some parameters are estimated. | | |________________|___________________________________|______________| | | | | | [Solution ID] | Solution Number at a Site/Point | 1X,A4 | | | code for which some parameters | | | | are estimated. | | |________________|___________________________________|______________| | | | | | [Observation | Identification of the observation | 1X,A1 | | Code] | technique used. | | |________________|___________________________________|______________| | | | | | [Time] | Time since the receiver has been | 1X,I2.2, | | | operating at the Site/Point. | 1H:,I3.3, | | | Value 00:000:00000 indicates that | 1H:,I5.5 | | | the receiver has been operating | | | | at least since the "File Epoch | | | | Start Time". | | |________________|___________________________________|______________| | | | | | [Time] | Time until the receiver is opera- | 1X,I2.2, | | | ted at a Site/Point. | 1H:,I3.3, | | | Value 00:000:00000 indicates that | 1H:,I5.5 | | | the receiver has been operating | | | | at least until the "File Epoch | | | | End Time". | | |________________|___________________________________|______________| | | | | | Receiver Type | Receiver Name & model. | 1X,A20 | |________________|___________________________________|______________| | | | | | Receiver | Serial number of the receiver. | 1X,A5 | | Serial Number | Takes on value '-----' if unknown.| | |________________|___________________________________|______________| | | | | | Receiver | Firmware used by this receiver | 1X,A11 | | Firmware | during the epoch specified above. | | | | Takes on value '---------------' | | | | if unknown. | | |________________|___________________________________|______________| | | | 80 | |______________| Comments: - For IGS standard receiver names please refer to ftp://igscb.jpl.nasa.gov/igscb/station/general/rcvr_ant.tab 15. SITE/ANTENNA Block (Mandatory for GPS) Description: List of antennas used at each site used in the SINEX file. Contents: ___________________________________________________________________ |_______S_I_T_E___A_N_T_E_N_N_A___D_A_T_A___L_I_N_E_________________| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | [Site Code] | Site code for which some | 1X,A4 | | | parameters are estimated. | | |________________|___________________________________|______________| | | | | | [Point Code] | Point Code at a site for which | 1X,A2 | | | some parameters are estimated. | | |________________|___________________________________|______________| | | | | | [Solution ID] | Solution Number at a Site/Point | 1X,A4 | | | code for which some parameters | | | | are estimated. | | |________________|___________________________________|______________| | | | | | [Observation | Identification of the observation | 1X,A1 | | Code] | technique used. | | |________________|___________________________________|______________| | | | | | [Time] | Time since the antenna has been | 1X,I2.2, | | | installed at the Site/Point. | 1H:,I3.3, | | | Value 00:000:00000 indicates that | 1H:,I5.5 | | | the antenna has been installed | | | | at least since the "File Epoch | | | | Start Time". | | |________________|___________________________________|______________| | | | | | [Time] | Time until the antenna is instal- | 1X,I2.2, | | | led at a Site/Point. | 1H:,I3.3, | | | Value 00:000:00000 indicates that | 1H:,I5.5 | | | the antenna has been installed | | | | at least until the "File Epoch | | | | End Time". | | |________________|___________________________________|______________| | | | | | Antenna Type | Antenna name & model. | 1X,A20 | |________________|___________________________________|______________| | | | | | Antenna | Serial number of the antenna. | 1X,A5 | | Serial Number | Takes on value '-----' if unknown.| | |________________|___________________________________|______________| | | | 68 | |______________| Comments: - For IGS standard antenna names please refer to ftp://igscb.jpl.nasa.gov/igscb/station/general/rcvr_ant.tab 16. SITE/GPS_PHASE_CENTER Block (Mandatory for GPS) Description: List of GPS phase center offsets for the antennas described in the Site Antenna block. The offset is given from the Antenna Reference Point (ARP) to the L1 and L2 phase centers respectively. Contents: ___________________________________________________________________ |_______G_P_S___P_H_A_S_E___C_E_N_T_E_R___D_A_T_A___L_I_N_E_________| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | Antenna Type | Antenna name & model. | 1X,A20 | |________________|___________________________________|______________| | | | | | Antenna | Serial number of the antenna. | 1X,A5 | | Serial Number | Takes on value '-----' if the | | | | phase center offsets apply to all | | | | antennas of the same type. | | |________________|___________________________________|______________| | | | | | L1 Phase Center| Up(+) offset from the ARP to | 1X,F6.4 | | Up Offset | the L1 phase center in meters. | | |________________|___________________________________|______________| | | | | | L1 Phase Center| North(+) offset from the ARP to | 1X,F6.4 | | North Offset | the L1 phase center in meters. | | |________________|___________________________________|______________| | | | | | L1 Phase Center| East(+) offset from the ARP to | 1X,F6.4 | | East Offset | the L1 phase center in meters. | | |________________|___________________________________|______________| | | | | | L2 Phase Center| Up(+) offset from the ARP to | 1X,F6.4 | | Up Offset | the L2 phase center in meters. | | |________________|___________________________________|______________| | | | | | L2 Phase Center| North(+) offset from the ARP to | 1X,F6.4 | | North Offset | the L2 phase center in meters. | | |________________|___________________________________|______________| | | | | | L2 Phase Center| East(+) offset from the ARP to | 1X,F6.4 | | East Offset | the L2 phase center in meters. | | |________________|___________________________________|______________| | | | | | Antenna Cali- | Name of the antenna model used in | 1X,A10 | | bration model | the correction of the observations| | | | for phase center variations. | | |________________|___________________________________|______________| | | | 80 | |______________| Comments: For IGS purposes see the IGS Central Bureau Information System for ARPs and antenna phase center offsets: directory: igscb/station/general/ files: antenna.gra and rcv_ant.tab If the phase center offsets for one antenna type (antenna name and the given model) are the same for all antenna serial numbers, it is enough to store only one data line (with '-----' for the 'Antenna Serial Number') in this block for each antenna type that appears in the SITE/ANTENNA block. 17. SITE/ECCENTRICITY Block (Mandatory) Description: List of antenna eccentricities from the Marker to the Antenna Reference Point (ARP) or to the intersection of axis. Contents: ___________________________________________________________________ |__S_I_T_E____E_C_C_E_N_T_R_I_C_I_T_Y___D_A_T_A___L_I_N_E___________| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | [Site Code] | Site code for which some | 1X,A4 | | | parameters are estimated. | | |________________|___________________________________|______________| | | | | | [Point Code] | Point Code at a site for which | 1X,A2 | | | some parameters are estimated. | | |________________|___________________________________|______________| | | | | | [Solution ID] | Solution ID at a Site/Point | 1X,A4 | | | code for which some parameters | | | | are estimated. | | |________________|___________________________________|______________| | | | | | [Observation | Identification of the observation | 1X,A1 | | Code] | technique used. | | |________________|___________________________________|______________| | | | | | [Time] | Time since the antenna has been | 1X,I2.2, | | | installed at the Site/Point. | 1H:,I3.3, | | | Value 00:000:00000 indicates that | 1H:,I5.5 | | | the antenna has been installed | | | | at least since the "File Epoch | | | | Start Time". | | |________________|___________________________________|______________| | | | | | [Time] | Time until the antenna is instal- | 1X,I2.2, | | | led at a Site/Point. | 1H:,I3.3, | | | Value 00:000:00000 indicates that | 1H:,I5.5 | | | the antenna has been installed | | | | at least until the "File Epoch | | | | End Time". | | |________________|___________________________________|______________| | | | | | Eccentricity | Reference system used to describe | 1X,A3 | | Reference | vector distance from monument | | | System | benchmark to the antenna reference| | | | point or intersection of axis: | | | | 'UNE' - Local reference system | | | | Up, North, East. | | | | 'XYZ' - Cartesian Reference System| | | | X, Y, Z. | | | | All units are in meters. | | |________________|___________________________________|______________| | | | | | Up / X | Up / X offset from the marker to | 1X,F8.4 | | Eccentricity | the Antenna reference point (ARP).| | |________________|___________________________________|______________| | | | | | North / Y | North/Y offset from the marker to | 1X,F8.4 | | Eccentricity | the Antenna reference point (ARP).| | |________________|___________________________________|______________| | | | | | East / Z | East/Z offset from the marker to | 1X,F8.4 | | Eccentricity | the Antenna reference point (ARP).| | |________________|___________________________________|______________| | | | 72 | |______________| Comments: - At the moment the local ties used in the ITRF2000 primary combination are only available throughout a login/password ftp access. To get access to these values please contact Zuheir Altamimi (altamimi@ensg.ign.fr). - An older (March 23, 1999) listing of the official values for IERS sites is available at ftp://lareg.ensg.ign.fr/pub/itrf/iers.ecc - For GPS (antenna heights) you can refer to the daily generated IGS SINEX template: ftp://igscb.jpl.nasa.gov/pub/station/general/igs.snx - For VLBI solutions you can use http://gemini.gsfc.nasa.gov/solve_save/ECCDAT.ecc - The official ILRS eccentricity files (in SINEX format) are ftp://cddisa.gsfc.nasa.gov/pub/slrocc/ecc_une.snx for eccentricities in Up, North, East and ftp://cddisa.gsfc.nasa.gov/pub/slrocc/ecc_xyz.snx for eccentricities in X, Y, Z 18. SOLUTION/EPOCHS Block (Mandatory) Description: List of solution epoch for each Site Code/Point Code/Solution Number/Observation Code (SPNO) combination. Contents: ___________________________________________________________________ |____S_O_L_U_T_I_O_N___E_P_O_C_H_S___D_A_T_A___L_I_N_E______________| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | [Site Code] | Site code for which some | 1X,A4 | | | parameters are estimated. | | |________________|___________________________________|______________| | | | | | [Point Code] | Point Code at a site for which | 1X,A2 | | | some parameters are estimated. | | |________________|___________________________________|______________| | | | | | [Solution ID] | Solution Number at a Site/Point | 1X,A4 | | | code for which some parameters | | | | are estimated. | | |________________|___________________________________|______________| | | | | | [Observation | Identification of the observation | 1X,A1 | | Code] | technique used. | | |________________|___________________________________|______________| | | | | | [Time] | Start time for which the solution | 1X,I2.2, | | | identified (SPNO) has observations| 1H:,I3.3, | | | | 1H:,I5.5 | |________________|___________________________________|______________| | | | | | [Time] | End time for which the solution | 1X,I2.2, | | | identified (SPNO) has observations| 1H:,I3.3, | | | | 1H:,I5.5 | |________________|___________________________________|______________| | | | | | [Time] | Mean time of the observations for | 1X,I2.2, | | | which the solution (SPNO) is | 1H:,I3.3, | | | derived. | 1H:,I5.5 | |________________|___________________________________|______________| | | | 54 | |______________| 19. BIAS/EPOCHS Block (Mandatory if bias parameters are included) Description: List of epochs of bias parameters for each Site Code/Point Code/Solution Number/Bias Type (SPNB) combination for which a bias parameter is solved. Contents: ___________________________________________________________________ |______________B_I_A_S___E_P_O_C_H_S___D_A_T_A___L_I_N_E____________| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | [Site Code] | Site code for which some biases | 1X,A4 | | | are estimated (station ID) | | |________________|___________________________________|______________| | | | | | [Point Code] | satellite ID for which some biases| 1X,A2 | | | are estimated: | | | | e.g. L1, L2 for LAGEOS-1 and -2 | | | | respectivly | | |________________|___________________________________|______________| | | | | | [Solution ID] | sequential number of the bias for | 1X,A4 | | | this particular station | | | | (if just one bias is solved for a | | | | particular station, this parameter| | | | remains "1"). | | |________________|___________________________________|______________| | | | | | Bias Type | Specification of the type of bias:| 1X,A1 | | | R - range bias | | | | T - time bias | | | | S - scale bias | | | | Z - troposphere bias at zenith | | |________________|___________________________________|______________| | | | | | [Time] | Epoch of 1st observation of the | 1X,I2.2, | | | solution identified (SPNB) | 1H:,I3.3, | | | | 1H:,I5.5 | |________________|___________________________________|______________| | | | | | [Time] | Epoch of last observation of the | 1X,I2.2, | | | solution identified (SPNB) | 1H:,I3.3, | | | | 1H:,I5.5 | |________________|___________________________________|______________| | | | | | [Time] | Weighted mean time of the | 1X,I2.2, | | | observations for which the | 1H:,I3.3, | | | solution (SPNB) is derived. | 1H:,I5.5 | |________________|___________________________________|______________| | | | 54 | |______________| 20. SOLUTION/STATISTICS Block (Recommended if available) Description: Statistical information about the solution contained in the SINEX file. Contents: ___________________________________________________________________ |____S_O_L_U_T_I_O_N___S_T_A_T_I_S_T_I_C_S_____L_I_N_E______________| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | Information | Describes the type of information | 1X,A30 | | Type | present in the next field. May | | | | take on the following values: | | | | | | | |'NUMBER OF OBSERVATIONS' | | | | # of observations used in the | | | | adjustment. | | | |'NUMBER OF UNKNOWNS' | | | | # of unknowns solved in the | | | | adjustment. | | | |'SAMPLING INTERVAL (SECONDS)' | | | | Interval in seconds between | | | | successives observations. | | | |'SQUARE SUM OF RESIDUALS (VTPV)' | | | | Sum of squares of residuals. | | | | (V'PV); V - resid. vector; | | | | P - weight matrix | | | |'PHASE MEASUREMENTS SIGMA' | | | | Sigma used for the phase | | | | measurements. | | | |'CODE MEASUREMENTS SIGMA' | | | | Sigma used for the code (pseudo-| | | | range) measurements. | | | |'NUMBER OF DEGREES OF FREEDOM' | | | | # of observations minus the | | | | # of unknowns | | | | (df) | | | |'VARIANCE FACTOR' | | | | Sum of squares of residuals | | | | divided by the degrees of | | | | freedom (V'PV/df). Equivalent | | | | to Chi-squared/df. | | | |'WEIGHTED SQUARE SUM OF O-C' | | | | Sum of squares of the vector | | | | 'observed minus computed': | | | | (o-c)'P(o-c) | | | | with P - weigth matrix | | |________________|___________________________________|______________| | | | | | Information | Relevant information for the type | 1X,F22.15 | | | indicated by the previous field. | | |________________|___________________________________|______________| | | | 54 | |______________| Comments: The mentioned 'Information Types' may be in any order but the name of the fields should be identical to the names listed above. Note that the NUMBER OF UNKNOWNS contains all parameters of the adjustment, i.e., not only the parameters stored in the SINEX file but as well all the pre- eliminated parameters. The NUMBER OF OBSERVATIONS should contain only the real observations and not the pseudo-observations used for constraining. In principle the estimated variance-covariance matrix should be normalized / multiplied by the VARIANCE FACTOR of this statistic block. 21. SOLUTION/ESTIMATE Block (Mandatory) Description: Estimated parameters. Contents: ___________________________________________________________________ |______S_O_L_U_T_I_O_N___E_S_T_I_M_A_T_E___D_A_T_A___L_I_N_E________| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | Estimated Para-| Index of estimated parameters. | 1X,I5 | | meters Index | values from 1 to the number of | | | | parameters. | | |________________|___________________________________|______________| | | | | |[Parameter Type]| Identification of the type of | 1X,A6 | | | parameter. | | |________________|___________________________________|______________| | | | | | [Site Code] | Site code for which some | 1X,A4 | | | parameters are estimated. | | |________________|___________________________________|______________| | | | | | [Point Code] | Point Code at a site or the | 1X,A2 | | | satellite ID for which some | | | | parameters are estimated. | | |________________|___________________________________|______________| | | | | | [Solution ID] | Solution ID at a Site/Point | 1X,A4 | | | code for which some parameters | | | | are estimated. | | |________________|___________________________________|______________| | | | | | [Time] | Epoch at which the estimated | 1X,I2.2, | | | parameter is valid. | 1H:,I3.3, | | | For bias parameters the beginning | 1H:,I5.5 | | | of the pass (identical to the | | | | BIAS/EPOCHS block). | | |________________|___________________________________|______________| | | | | | Parameter Units| Units used for the estimates and | 1X,A4 | | | sigmas. The notations are: | | | | m (metres), | | | | m/y (metres per year), | | | | m/s2 (metres per second**2), | | | | ppb (parts per billion), | | | | ms (milliseconds), | | | | msd2 (milliseconds per day**2), | | | | mas (milli-arc-seconds), | | | | ma/d (milli-arc-seconds / day), | | | | rad (radians), | | | | rd/y (radians per year), | | | | rd/d (radians per day). | | |________________|___________________________________|______________| | | | | | [Constraint | Constraint applied to the parame- | 1X,A1 | | Code] | ter. | | |________________|___________________________________|______________| | | | | | Parameter | Estimated value of the parameter. | 1X,E21.15 | | Estimate | | | |________________|___________________________________|______________| | | | | | Parameter | Estimated standard deviation for | 1X,E11.6 | | Standard | the parameter. | | | Deviation | | | |________________|___________________________________|______________| | | | 80 | |______________| Comments: For the demanded units of the estimated parameters and their standard deviation please refer to the list of possible parameter types (2. Data Structure). 'Per year' means 365.25 days in this context. 22. SOLUTION/APRIORI Block (Mandatory) Description: Apriori information for estimated parameters, either the used apriori values for the adjustment or the parameters of a Helmert Transformation for applied inner constraints with the constraint given in the field 'Standard Deviation'. Contents: ___________________________________________________________________ |________S_O_L_U_T_I_O_N___A_P_R_I_O_R_I___D_A_T_A___L_I_N_E________| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | Parameter | Index of apriori parameters. | 1X,I5 | | Index | | | |________________|___________________________________|______________| | | | | |[Parameter Type]| Identification of the type of | 1X,A6 | | | parameter. | | | | For apriori values of estimated | | | | parameters see parameter list | | | | above; | | | | For inner constraints: | | | | TX - Translation in X-direction m| | | | TY - Translation in Y-direction m| | | | TZ - Translation in Z-direction m| | | | RX - Rotation around X-axis mas| | | | RY - Rotation around Y-axis mas| | | | RZ - Rotation around Z-axis mas| | | | SC - Scale ppb| | | | TXR - Rate for translation in | | | | X-direction m/y| | | | TYR - Rate for translation in | | | | Y-direction m/y| | | | TZR - Rate for translation in | | | | Z-direction m/y| | | | RXR - Rate for rotation around | | | | X-axis mas/y| | | | RYR - Rate for rotation around | | | | Y-axis mas/y| | | | RZR - Rate for rotation around | | | | Z-axis mas/y| | | | SCR - Rate for scale ppb/y| | |________________|___________________________________|______________| | | | | | [Site Code] | Site code with apriori parameter | 1X,A4 | | | estimate. | | | | ---- for inner constraints | | |________________|___________________________________|______________| | | | | | [Point Code] | Point Code with apriori parameter | 1X,A2 | | | estimate. | | | | -- for inner constraints | | |________________|___________________________________|______________| | | | | | [Solution ID] | Solution ID at a Site/Point | 1X,A4 | | | code with apriori parameter | | | | estimate. | | | | ---- for inner constraints | | |________________|___________________________________|______________| | | | | | [Time] | Epoch at which the apriori | 1X,I2.2, | | | parameter or the inner constraint | 1H:,I3.3, | | | is valid. | 1H:,I5.5 | |________________|___________________________________|______________| | | | | | Parameter Units| Units used for the aprioris and | 1X,A4 | | | sigmas. For the demanded units | | | | look at SOLUTION/ESTIMATE block. | | | | For the inner constraints the | | | | units should be: | | | | m for translations, | | | | mas for rotations, | | | | ppb for scale, | | | | m/y for translation rates, | | | | ma/y for rotation rates, | | | | pb/y for scale rates | | |________________|___________________________________|______________| | | | | | [Constraint | Constraint applied to the parame- | 1X,A1 | | Code] | ter. | | | | If inner constraints are applied: | | | | 1 for contributing stations | | |________________|___________________________________|______________| | | | | | Parameter | Apriori value of the parameter or | 1X,E21.15 | | Apriori | transformation parameter for the | | | | inner constraint. | | |________________|___________________________________|______________| | | | | | Parameter | Apriori standard deviation for | 1X,E11.6 | | Standard | the parameter or applied inner | | | Deviation | constraint. | | |________________|___________________________________|______________| | | | 80 | |______________| Comments: If inner constraints are applied to the solution (i.e. parameters like TX, TY, TZ, RX,... are included) the stations contributing to these inner constraints should be listed with a '1' in the field 'Constraint Code' in this SOLUTION/APRIORI block. 23. SOLUTION/MATRIX_ESTIMATE Block (Mandatory) Description: The Estimate Matrix can be stored in an Upper or Lower triangular form. Only the Upper or Lower portion needs to be stored because the matrix is always symmetrical. The matrix contents can be: CORR - Correlation Matrix COVA - Covariance Matrix INFO - Information Matrix (of Normals), i.e. COVA^(-1) The distinction between the form and its contents is given by the title block which must take one of the following forms: SOLUTION/MATRIX_ESTIMATE L CORR SOLUTION/MATRIX_ESTIMATE U CORR SOLUTION/MATRIX_ESTIMATE L COVA SOLUTION/MATRIX_ESTIMATE U COVA SOLUTION/MATRIX_ESTIMATE L INFO SOLUTION/MATRIX_ESTIMATE U INFO Contents: ___________________________________________________________________ |S_O_L_U_T_I_O_N__M_A_T_R_I_X__E_S_T_I_M_A_T_E____D_A_T_A___L_I_N_E_| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | Matrix Estimate| Row index for the Matrix Estimate.| 1X,I5 | | Row Number | It must match the parameter index | | | | in the SOLUTION/ESTIMATE block | | | | for the same parameter. | | |________________|___________________________________|______________| | | | | | Matrix Estimate| Column index for the Matrix Esti- | 1X,I5 | | Column Number | mate. It must match the parameter | | | | index in the SOLUTION/ESTIMATE | | | | block for the same parameter. | | |________________|___________________________________|______________| | | | | | First Matrix | Matrix element at the location | 1X,E21.14 | |Estimate Element| ( Row Number , Column Number ). | | |________________|___________________________________|______________| | | | | | Second Matrix | Matrix element at the location | 1X,E21.14 | |Estimate Element| ( Row Number , Column Number + 1).| | |________________|___________________________________|______________| | | | | | Third Matrix | Matrix element at the location | 1X,E21.14 | |Estimate Element| ( Row Number , Column Number + 2).| | |________________|___________________________________|______________| | | | 78 | |______________| Comment: The Matrix Estimate Row/Column Number correspond to the Estimated Parameters Index in the SOLUTION/ESTIMATE block. If the CORR matrix is used, standard deviations must be stored in the diagonal elements instead of 1.000. Missing elements in the matrix are assumed to be zero (0); consequently, zero elements may be omitted to reduce the size of this block. NOTE: The same scale (variance) factor MUST be used for both MATRIX_ESTIMATE and MATRIX_APRIORI, as well as for the standard deviations in the ESTIMATE and APRIORI Blocks. This scale factor should be stored as 'Variance Factor' in the SOLUTION/STATISTICS block. If you use the INFO type this block should contain the constrained normal equation matrix of your least square adjustment. 24. SOLUTION/MATRIX_APRIORI Block (Recommended/Mandatory) Description: The Apriori Matrix can be stored in an Upper or Lower triangular form. Only the Upper or Lower portion needs to be stored because the matrix is always symmetrical. Mandatory if any significant constraint have been applied to the SOLUTION/ESTIMATE. The matrix contents can be: CORR - Correlation Matrix COVA - Covariance Matrix INFO - Information Matrix (of Normals), i.e. COVA^(-1) The distinction between the form and its contents is given by the title block which must take one of the following forms: SOLUTION/MATRIX_APRIORI L CORR SOLUTION/MATRIX_APRIORI U CORR SOLUTION/MATRIX_APRIORI L COVA SOLUTION/MATRIX_APRIORI U COVA SOLUTION/MATRIX_APRIORI L INFO SOLUTION/MATRIX_APRIORI U INFO Contents: ___________________________________________________________________ |__S_O_L_U_T_I_O_N__M_A_T_R_I_X__A_P_R_I_O_R_I____D_A_T_A___L_I_N_E_| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | Matrix Apriori | Row index for the Matrix Apriori. | 1X,I5 | | Row Number | It must match the parameter index | | | | in the SOLUTION/APRIORI block | | | | for the same parameter. | | |________________|___________________________________|______________| | | | | | Matrix Apriori | Column index for the Matrix | 1X,I5 | | Column Number | Apriori. It must match the | | | | parameter index in the | | | | SOLUTION/APRIORI block for the | | | | same parameter. | | |________________|___________________________________|______________| | | | | | First Matrix | Matrix element at the location | 1X,E21.16 | |Estimate Element| ( Row Number , Column Number ). | | |________________|___________________________________|______________| | | | | | Second Matrix | Matrix element at the location | 1X,E21.16 | |Estimate Element| ( Row Number , Column Number + 1).| | |________________|___________________________________|______________| | | | | | Third Matrix | Matrix element at the location | 1X,E21.16 | |Estimate Element| ( Row Number , Column Number + 2).| | |________________|___________________________________|______________| | | | 78 | |______________| Comment: The Matrix Apriori Row/Column Number correspond to the Apriori Parameters Index in the SOLUTION/APRIORI block. If the apriori constraint matrix is diagonal and no loss of significant digits occurs by using the Parameter Standard Deviation in the SOLUTION/APRIORI block, then, this block becomes redundant. If the CORR matrix is used, Standard deviations must be stored in the diagonal elements instead of 1.000. Missing elements in the matrix are assumed to be zero (0); consequently, zero elements may be omitted to reduce the size of this block. NOTE: The same scale (variance) factor MUST be used for both MATRIX_ESTIMATE and MATRIX_APRIORI, as well as for the standard deviations in the ESTIMATE and APRIORI Blocks. This scale factor should be stored as 'Variance Factor' in the SOLUTION/STATISTICS block. If you use the INFO type this block should contain the normal equation matrix of the constraints applied to your solution in SOLUTION/ESTIMATE. 25. SOLUTION/NORMAL_EQUATION_VECTOR Block (Mandatory for normal equations) Description: If the SINEX file shall provide the normal equation directly this block is mandatory and contains the vector of the right hand side of the unconstrained (reduced) normal equation. Contents: ___________________________________________________________________ |_SOLUTION__N_O_R_M_A_L___E_Q_U_A_T_I_O_N___V_E_C_T_O_R___DATA_LINE_| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | Estimated Para-| Index of estimated parameters. | 1X,I5 | | meters Index | Values from 1 to the number of | | | | parameters. It must match the | | | | parameter index in the block | | | | SOLUTION/ESTIMATE for the same | | | | parameter. | | |________________|___________________________________|______________| | | | | |[Parameter Type]| Identification of the type of | 1X,A6 | | | parameter. | | |________________|___________________________________|______________| | | | | | [Site Code] | Site code for which some | 1X,A4 | | | parameters are estimated. | | |________________|___________________________________|______________| | | | | | [Point Code] | Point Code at a site or the | 1X,A2 | | | satellite ID for which some | | | | parameters are estimated. | | |________________|___________________________________|______________| | | | | | [Solution ID] | Solution ID at a Site/Point | 1X,A4 | | | code for which some parameters | | | | are estimated. | | |________________|___________________________________|______________| | | | | | [Time] | Epoch at which the estimated | 1X,I2.2, | | | parameter is valid. | 1H:,I3.3, | | | For bias parameters the beginning | 1H:,I5.5 | | | of the pass (identical to the | | | | BIAS/EPOCHS block). | | |________________|___________________________________|______________| | | | | | Parameter Units| see SOLUTION/ESTIMATE | 1X,A4 | | | | | |________________|___________________________________|______________| | | | | | [Constraint | Constraint applied to the parame- | 1X,A1 | | Code] | ter. | | |________________|___________________________________|______________| | | | | | Right hand | Value of the right hand side of | 1X,E21.15 | | side of normal | the normal equation for the | | | equation | corresponding parameter. | | |________________|___________________________________|______________| | | | 68 | |______________| Comment: The indices correspond to the indices of the SOLUTION/ESTIMATE block. 26. SOLUTION/NORMAL_EQUATION_MATRIX Block (Mandatory for normal equations) Description: This block is mandatory if the normal equation is to be provided directly in the SINEX file. The block should contain the original (reduced) normal equation matrix (i.e., without constraints). The normal equation matrix can be stored in an Upper or Lower triangular form. Only the Upper or Lower portion needs to be stored because the matrix is always symmetrical. The distinction between the forms is given by the title block which must take one of the following forms: SOLUTION/NORMAL_EQUATION_MATRIX L SOLUTION/NORMAL_EQUATION_MATRIX U Contents: ___________________________________________________________________ |_SOLUTION__N_O_R_M_A_L___E_Q_U_A_T_I_O_N___M_A_T_R_I_X___DATA_LINE_| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | NEQ-Matrix | Row index for the normal equation | 1X,I5 | | Row Number | matrix. It must match the | | | | parameter index in the SOLUTION/ | | | | ESTIMATE block for the same | | | | parameter. | | |________________|___________________________________|______________| | | | | | NEQ-Matrix | Column index for the normal | 1X,I5 | | Column Number | equation matrix. It must match the| | | | parameter index in the SOLUTION/ | | | | ESTIMATE block for the same | | | | parameter. | | |________________|___________________________________|______________| | | | | | First Matrix | Matrix element at the location | 1X,E21.14 | | Element | ( Row Number , Column Number ). | | |________________|___________________________________|______________| | | | | | Second Matrix | Matrix element at the location | 1X,E21.14 | | Element | ( Row Number , Column Number + 1).| | |________________|___________________________________|______________| | | | | | Third Matrix | Matrix element at the location | 1X,E21.14 | | Element | ( Row Number , Column Number + 2).| | |________________|___________________________________|______________| | | | 78 | |______________| Comment: The NEQ-Matrix Row/Column Number correspond to the Estimated Parameters Index in the SOLUTION/ESTIMATE block. Missing elements in the matrix are assumed to be zero (0); consequently, zero elements may be omitted to reduce the size of this block. 27. Footer Line (Mandatory) Description: Marks the end of the SINEX file. Contents: ___________________________________________________________________ |_____________F_O_O_T_E_R___L_I_N_E_________________________________| | | | | |__Field_________|______Description__________________|___Format_____| | | | | | End of SINEX | The seven characters %ENDSNX at | A7 | | | the beginning of the last line | | | | mark the end of the SINEX file. | | |________________|___________________________________|______________| | | | 7 | |______________|