Programme
Wednesday - December 5
| 08:00 - 08:30 h | Registration |
| 08:30 - 08:40 h | Welcome Rothacher M., Richter B. |
| 08:40 - 09:00 h | Overview of UAW Goals Rothacher M. Download: Unified Analysis Workshop (UAW): Overview of UAW Goals (PDF, 2MB, Not barrier-free file.) (not accessible) [PDF, 2 MB] |
Session 1: Details of Product Generation of the Services and Future
chaired by Pearlman M.
| Description: | All the services should present the observations, auxiliary data (e.g. meteorological data, etc.), standards, models, parameterizations, processing strategies, they use. Present a list of deficiencies, problems, etc., more like an overview. The details can be reported in Sessions 2-6. Present how the service intends to improve these issues and what new strategies are considered to improve the technique in general. |
| Goals: | Understand the processing details and problems of the individual techniques Knowledge of the improvements planned by each of the techniques Discuss ways to improve the deficiencies and cure problems in the future |
| 09:00 - 10:15 h | Product Generation and Future: IVS Nothnagel A. Download: International VLBI Servicefor Geodesy and Astrometry -Product Generation and Future - (PDF, 955KB, Not barrier-free file.) (not accessible) [PDF, 1 MB] |
| Product Generation and Future: ILRS Pavlis E. Download: Product Generation and Future: ILRS (PDF, 3MB, Not barrier-free file.) (not accessible) [PDF, 4 MB] | |
| IGS Products - Generation of AC products and Combination Gendt G. Download: IGS Products Generation of AC products and Combination (PDF, 548KB, Not barrier-free file.) (not accessible) [PDF, 548 KB] | |
| 10:15 - 10:45 h | Coffee Break |
| 10:45 - 12:00 h | IDS: Product and Service Status Lemoine F. Download: International DORIS Service: Product and Service Status (PDF, 1MB, Not barrier-free file.) (not accessible) [PDF, 2 MB] |
| Product Generation and Future: IERS Rothacher M. Download: Product Generation and Future: IERS (PDF, 450KB, Not barrier-free file.) (not accessible) [PDF, 450 KB] | |
| Product Generation and Future: IGFS Wilmes H., Kusche J. Download: Product Generation and Future: IGFS (PDF, 2MB, Not barrier-free file.) (not accessible) [PDF, 2 MB] | |
| 12:00 - 13:00 h | Lunch |
Session 2
Technique-Specific Biases and Effects at Co-Location Sites/Satellites
chaired by Gendt G.
co-chaired by Nothnagel A., Pavlis E., Lemoine F., Van Dam T., Appleby G.
| Description: | Co-location sites/satellites are the only points, where the consistency of and systematic biases between individual techniques can be assessed. List of technique-specific biases for all techniques and their reduction/elimination/parameterization. Every technique-specific bias causes problems in the combination (if not removed or estimated). Differences at co-location sites/satellites show the technique-specific biases. A note concerning the local ties: at the UAW workshop we do not want to consider the terrestrial surveying aspects and problems. Co-location on the ground and on the satellites can be used. Systematic biases may be due to antenna effects (phase center variations, multipath, thermal expansion, gravitational sag, calibrations, ...). Systematic biases affect site coordinates and velocities, site coordinate time series, but also other parameters. Similar to local ties also troposphere local ties can be considered, i.e. systematic differences in troposphere parameters from VLBI, GNSS, and DORIS. Systematic differences in Earth rotation parameters show reference frame inconsistencies. Finally, we should look at systematic effects in orbits from different techniques (GNSS orbits from microwave and SLR observations, JASON orbits from DORIS, GPS, SLR or altimetry observations, ...). |
| Goals: | Compose a list as complete as possible of all the technique-specific biases and their size and impact Understand the systematic biases between the techniques Discuss ways to reduce, minimize or parameterize technique-specific biases |
Unified Analysis Workshop 2007 - Position Paper Session 2 (PDF, 2MB, Not barrier-free file.) (not accessible) [PDF, 2 MB] | |
| 13:00 - 15:00 h | Lessons from ITRF2005 & Post Analysis Altamimi Z. Download: Lessons from ITRF2005 & Post Analysis (PDF, 542KB, Not barrier-free file.) (not accessible) [PDF, 542 KB] |
| Biases caused by different models for the neutral atmosphere delays in VLBI, GPS and DORIS analysis Böhm J. Download: Biases caused by different models for the neutral atmosphere delays in VLBI, GPS, and DORIS analysis (PDF, 329KB, Not barrier-free file.) (not accessible) [PDF, 329 KB] | |
| PCV Issues Bar-Sever Y. Download: PCV Issues (PDF, 728KB, Not barrier-free file.) (not accessible) [PDF, 728 KB] | |
| High Accuracy Non-Conservative Force Modeling Sibthorpe A. Download: High Accuracy Non-Conservative Force Modeling (PDF, 4MB, Not barrier-free file.) (not accessible) [PDF, 4 MB] | |
| Identification of Systematics by Co-location on Satellites Ries J. Download: GGOS Unified Analysis Workshop Session 2 - Technique-Specific Biases and Effects at Co-Location Sites/Satellites - Identification of Systematicsby Co-location on Satellite (PDF, 895KB, Not barrier-free file.) (not accessible) [PDF, 895 KB] | |
| Engineering-assessed SLR Range biases Appleby G. Download: Engineering-assessed SLR Range biases (PDF, 619KB, Not barrier-free file.) (not accessible) [PDF, 619 KB] | |
| Analysis-assessed SLR Range biases Luceri C. Download: Analysis-assessed SLR Range biases (PDF, 1MB, Not barrier-free file.) (not accessible) [PDF, 2 MB] | |
| 5-min contributions with 1-2 slides: | |
| GPS Microwave Orbits versus SLR Observations Springer T. Download: GPS Microwave Orbits versus SLR Observations (PDF, 548KB, Not barrier-free file.) (not accessible) [PDF, 548 KB] | |
| What should we do about met (sensor) data? Niell A. Download: What should we do about met (sensor) data? (PDF, 37KB, Not barrier-free file.) (not accessible) [PDF, 37 KB] | |
| VLBI Scale Error MacMillan D. Download: VLBI Scale Error (PDF, 304KB, Not barrier-free file.) (not accessible) [PDF, 304 KB] | |
| 15:00 - 15:30 h | Coffee Break |
| 15:30 - 17:00 h | Position Paper and Discussion chaired by Pavlis E. |
| General Discussion, Action Items chaired by Pavlis E. Download: Session 2 Discussion Agenda (PDF, 9KB, Not barrier-free file.) (not accessible) [PDF, 9 KB] |
Thursday - December 6
Session 3
Standardization/Extension of Common Parameterization
chaired by Böhm J.
co-chaired by Luceri C., Springer T., Willis P., Luzum B., Wilmes H.
| Description: | Define common standards for the parameterization of quantities estimated by space geodetic techniques (Earth orientation parameters, troposphere parameters, gravity field coefficients, ...). Define common standards for a priori values/models to be used for these parameters. Define common standards for the time resolution (intervals) and reference epochs of parameters (weekly, daily, sub-daily, ...). Extend the SINEX format to allow for additional parameter types and parameterizations. Transformations needed between different parameter sets; set up of additional parameters (e.g. site velocities, geocenter coordinates, ...), flexibilities in the manipulation of the parameter space. Singularities or near-singularities between different parameter groups (e.g. ERPs, site coordinates, geocenter, translations, lower degree harmonics of the gravity field, orbital elements, ...). Parameterization for ITRF200x (next release of ITRF). |
| Goals: | Define and agree on a extended version of the SINEX format Understand the singularities and correlations between different parameter groups and their impact Understand transformations between different parameterizations of quantities (e.g. offset and drift → piece-wise linear polygon) and other modifications of the parameter space Define the set of parameters to be used for the next ITRF200x realization |
Unified Analysis Workshop 2007 - Session 3 Standardization/Extension of Common Parameterization (PDF, 51KB, Not barrier-free file.) (not accessible) [PDF, 51 KB] | |
| 08:30 - 10:00 h | Standardization/Extension of Common Parameterization Böhm J. Download: UAW Session 3 - Standardization/Extension of Common Parametrization (PDF, 27KB, Not barrier-free file.) (not accessible) [PDF, 27 KB] |
| Experiences with CONT02 and GGOS-D Tesmer V. et al. Download: Experiences with CONT02 and GGOS-D, Standardization/Extension of Common Parameters (PDF, 1MB, Not barrier-free file.) (not accessible) [PDF, 2 MB] | |
| Systematic errors in DORIS Z-Geocenter time series Willis P. et al. Download: Systematic Errors in DORIS Z-Geocenter time series (PDF, 198KB, Not barrier-free file.) (not accessible) [PDF, 198 KB] | |
| IERS Conventions Implementation Issues Springer T. Download: IERS Conventions Implementation Issues (PDF, 158KB, Not barrier-free file.) (not accessible) [PDF, 158 KB] | |
| ILRS s/w Benchmark Tests for Candidate ACs Pavlis E. Download: ILRS s/w Benchmark Tests for Candidate ACs (PDF, 1,003KB, Not barrier-free file.) (not accessible) [PDF, 1 MB] | |
| GPS/GLONASS-Combined IGS Analysis at the Center for Orbit Determination (CODE) Using the Bernese Software Schaer S. Download: GPS/GLONASS-Combined IGS Analysis at the Center Orbit Determination (CODE) Using the Bernese Sofware (PDF, 834KB, Not barrier-free file.) (not accessible) [PDF, 834 KB] | |
| Acceptance Tests for SLR Stations Müller H. Download: Acceptance Tests for SLR stations (PDF, 266KB, Not barrier-free file.) (not accessible) [PDF, 266 KB] | |
| Proposal for Extended Parameterization in SINEX Rothacher M. Download: Proposal for Extended Parameterization in SINEX (PDF, 289KB, Not barrier-free file.) (not accessible) [PDF, 289 KB] | |
| Discussion, Action Items | |
| 10:00 - 10:30 h | Coffee Break |
Session 4
Combination Strategies and Aspects
chaired by Biancale R.
co-chaired by Tesmer V., Sciarretta C., Angermann D., Ferland R., Altamimi Z., Kusche J.
| Description: | Combination strategies to be used for various combined products of the IERS or GGOS (e.g. including troposphere parameters, quasar coordinates, gravity field coefficients, ...). Weighting of the observations and variance component estimation. Constraining of parameters, rank deficiencies. Datum definition strategies. Time resolution of parameters; epochs of parameters. UT1 and LOD, nutation offsets and rates (VLBI + satellite techniques). |
| Goals: | Improve common understanding of combination strategies Understand the Influence of local ties on the combination Concepts for UT1/LOD combination |
Unified Analysis Workshop 2007 - Position Paper Session 4 (PDF, 117KB, Not barrier-free file.) (not accessible) [PDF, 117 KB] | |
| 10:30 - 12:00 h | Combinations: state-of-the-art and prospective Biancale R. Download: Combinations: state-of-the-art and prospective (PDF, 1MB, Not barrier-free file.) (not accessible) [PDF, 2 MB] |
| Combination in Gravity Modelling Kusche J. Download: Combination in Gravity Modelling (PDF, 5MB, Not barrier-free file.) (not accessible) [PDF, 5 MB] | |
| Combination approaches at ILRS CCs, products and issues Sciaretta C. Download: Combination approaches at ILRS CCs, products and issues (PDF, 818KB, Not barrier-free file.) (not accessible) [PDF, 818 KB] | |
| SINEX Combination Procedure at IGS CC Ferland R. Download: SINEX Combination Procedure at IGS CC (PDF, 97KB, Not barrier-free file.) (not accessible) [PDF, 97 KB] | |
| Combination issues and approach at DGFI Angermann D., Tesmer V. Download: Combination issues and approach at DGFI (PDF, 438KB, Not barrier-free file.) (not accessible) [PDF, 438 KB] | |
| 12:00 - 13:00 h | Lunch |
| 13:00 - 15:00 h | Multi-technique combination, Current status and concerns Gambis D. Download: Multi-technique combination - Current status and concerns (PDF, 572KB, Not barrier-free file.) (not accessible) [PDF, 572 KB] |
| Discussion, Action Items | |
| 15:00 - 15:30 h | Coffee Break |
Session 5
New Products Based on Inter-technique Combinations
chaired by Schuh H.
co-chaired by Gurtner W., Müller J., Dow J., Tavernier G., Ma C., Forsberg R.
| Description: | Identify new products based on Inter-technique combinations that are needed for IERS/IGFS/GGOS. Steps toward a rapid ERP combination based on VLBI intensive sessions (1h), the IGS rapid products and other contributions (SLR, DORIS, AAM ?); Troposphere: combination of daily SINEX files containing troposphere delays from GNSS, VLBI and DORIS. Inclusion of quasar source positions into SINEX files. Combination/integration of gravity and geometry: low degree harmonics, geocenter, axes of inertia tensor and Earth rotation, ... |
| Goals: | Identify new combined products relevant for GGOS Define steps for a rapid ERP product combined on the SINEX level Define steps towards a combination of troposphere delays (in addition to station coordinates and ERPs) |
Unified Analysis Workshop 2007 - Position Paper Session 5 - “New Products Based on Inter-Technique Combinations” (PDF, 86KB, Not barrier-free file.) (not accessible) [PDF, 86 KB] | |
| 15:30 - 17:00 h | New Products Based on Inter-Technique Combinations Schuh H. Download: Unified Analysis Workshop 2007 - New Products Based on Inter-Technique Combinations (PDF, 3MB, Not barrier-free file.) (not accessible) [PDF, 4 MB] |
| Product Generation and Future: ILRS Pavlis E. Download: Product Generation and Future: ILRS (PDF, 3MB, Not barrier-free file.) (not accessible) [PDF, 4 MB] | |
| Lunar Laser Ranging Perspectives Müller J. Download: Lunar Laser Ranging Perspectives (PDF, 736KB, Not barrier-free file.) (not accessible) [PDF, 736 KB] | |
| The role of DORIS and mutual benefit with other techniques Tavernier G. Download: GGOS Unified Analysis Workshop - Session 5 - New Products Based on Inter-technique Combinations - The role of DORIS and mutual benefit with other techniques (PDF, 347KB, Not barrier-free file.) (not accessible) [PDF, 347 KB] | |
| Comparison and Combination of Tropospheric Parameters Tesmer V. Download: Comparison and Combination of Tropospheric Parameters (PDF, 421KB, Not barrier-free file.) (not accessible) [PDF, 421 KB] | |
| Discussion, Action Items |
Friday - December 7
Session 6
GGOS Portal and Meta Data Flow
chaired by Richter B.
co-chaired by Niell A., Noll C., Neilan R., Soudarin L., Wilmes H.
| Description: | To locate data at data centers, especially on the GGOS level, we need a consistent set of meta data for all data and products of the individual services. Even if all these products will be available at the Service web pages and data centers, there should still be a link from the GGOS portal to these data and product files. Definition of common meta data standards. List of institutions, analysis centers, data centers, individuals, ... involved in the GGOS endeavor should be contained in a consistent data base. List of products and their descriptions. Common databases on relevant data concerning space geodetic techniques (stations, institutions, products, analysis centers, data centers, individuals, instruments, satellite missions, ...). Consider synergies in activities common to all Services. |
| Goals: | Propose meta data standards to be used for data and products Define the meta data flow Compose a list of relevant information to be kept common (or consistent) for all Services Steps towards the realization of the data flow and information database |
Session 6 GGOS Portal and Metadata Flow (second draft) (PDF, 2MB, Not barrier-free file.) (not accessible) [PDF, 3 MB] | |
| 08:30 - 10:00 h | Data Formats and Standards in Geometric Services Noll C. Download: GGOS Data Formats and Standards (Geometric Services) (PDF, 34KB, Not barrier-free file.) (not accessible) [PDF, 34 KB] |
| Data Formats and Standards in Terrestrial Gravity Wilmes H. Download: Data Formats and Standards in Terrestrial Gravity (PDF, 1MB, Not barrier-free file.) (not accessible) [PDF, 2 MB] | |
| GGOS Metadata Richter B. Download: GGOS Metadata (PDF, 87KB, Not barrier-free file.) (not accessible) [PDF, 87 KB] | |
| GGOS Portal Noll C., Richter B. Download: GGOS Portal (PDF, 27KB, Not barrier-free file.) (not accessible) [PDF, 27 KB] | |
| Discussion, Action Items | |
| 10:00 - 10:30 h | Coffee Break |
Wrap-up, Summary and Action Items
chaired by Rothacher M.
| 10:30 - 12:00 h | Summaries of Discussions and Action Items Unified Analysis Workshop 2007 - Action Items (PDF, 49KB, Not barrier-free file.) (not accessible) [PDF, 49 KB] |
| 12:00 - 13:00 h | Lunch, Farewell |
