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Commission 1 „Reference Frames“

Commission 1 „Reference Frames“. SC1.1 Coordination of Space Technique (M. Rothacher) SC1.2 Global Reference Frames (C. Boucher) SC1.3 Regional Reference Frames (Z. Altamimi) SC1.4 Interaction of CRF and TRF (S.Y. Zhu) ICP1.1 Satellite Altimetry (W. Bosch)

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Commission 1 „Reference Frames“

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  1. Commission 1 „Reference Frames“ SC1.1 Coordination of Space Technique (M. Rothacher) SC1.2 Global Reference Frames (C. Boucher) SC1.3 Regional Reference Frames (Z. Altamimi) SC1.4 Interaction of CRF and TRF (S.Y. Zhu) ICP1.1 Satellite Altimetry (W. Bosch) (jointly with Commissions 1 and 3) ICP1.2 Vertical Reference Frames (J. Ihde) (jointly with Commission 2) SG1.1 Ionosphere Modelling (S. Skone) * (jointly with Comm. 4 and COSPAR) SG1.2 Use of GNSS for Reference Frames (R. Weber) (jointly with Comm. 4) SG1.3 Quality measures, quality control (H. Kutterer) (with ICCT)

  2. Steering Committee (11 members) H. Drewes Germany President C.K. Shum USA Vice President M. Rothacher Germany President Sub-commission 1.1 C. Boucher France President Sub-commission 1.2 Z. Altamimi France President Sub-commission 1.3 S.Y. Zhu Germany President Sub-commission 1.4 W. Gurtner Switzerland Representative of Services C. Ma USA Representative of Services J. Ries USA Representative of Services J. Manning Australia Member at large R. Wonnacott South Africa Member at large

  3. Meetings 07 July 2003: Informal Meeting Sapporo, Japan present: 12 officers, 6 of Steering Committee (President, Vice-President, Presidents 1, 2, 3, 4; Chairs ICP 1, 2; Chairs SC1.3a, b, e, f) 28 April 2004: Steering Committee Meeting, Nice, France present: 12 officers, 8 of Steering Committee (President, Presidents SC 1, 2, 3; Services (2), members at large (2); Chairs ICP 1; Chairs SC1.3b, d, e, f, Chair SG 2) 19-21 July 04: COSPAR General Assembly with PSD/B2.1 Symposium on Satellite Dynamics, Paris

  4. Status Report SC1.1 Coordination of Space Techniques • WG 1 Comparison and combination of precise orbits from different space geodetic techniques (with the IGS LEO WG; Chair: H. Boomkamp?) • WG 2 Interaction and consistency between terrestrial reference frame, Earth rotation, and gravity (with Comm. 2, Comm. 3, and IGGOS; Chair: D. Angermann?) • WG3 Comparison and combination of atmospheric information derived from different space geodetic techniques (together with IGS Troposphere WG, IGS Ionosphere WG, and IVS; Chair: J. Böhm?)

  5. Status Report (2) SC 1.2 Global Reference Frames • WG 1: Datum Definition of Global Terrestrial Reference Frames (with IERS and ICCT; Chair: G. Blewitt) • WG 2: Global Geodetic Observatories (with IGGOS, Chair: tbd) • WG 3: Integrated Theory for Crustal Deformation and Reference Frames (with Comm. 3 and ICCT; Chair: K. Heki) • WG 4: ITRS/ITRF Propagation to National and Inter- national Organizations (Chair: C. Boucher) • WG 5: Site Surveys and Co-locations (with IERS; Chair: J. Dawson)

  6. Status Report (3) SC 1.3 Regional Reference Frames • WG1: Inter-regional Technical Working Group(Chair: M. Craymer) • SC1.3a Europe (J.A. Torres, Portugal) • SC1.3b South & Central America (L.P. Fortes, Brazil) • SC1.3c North America (M.Craymer, Can., R.Snay, USA) • SC1.3d Africa (R. Wonnacott, S. Africa) • SC1.3e Asia-Pacific (J. Manning, Australia) • SC1.3f Antarctica (R. Dietrich, Germany) Focus: Africa (AFREF) and Asia

  7. Status Report (4) SC 1.4 Interaction of Celestial and Terrestrial Reference Frames • WG1: Theoretical Aspects of the Celestial Reference System (Chair: N.N., Observatoire de Paris) • WG2: Realization of Celestial Reference Frames (Chair: N.N., USNO) • WG3: Systematic Effects in the CRF Determination (Chair: Chopo Ma) • WG4: Interaction Between Celestial and Terrestrial Reference F. (Chair: N.N., DGFI)

  8. Status Report (5) ICP1.1 Satellite Altimetry - Open Data Base: data access, data formats, ... ICP1.2 Vertical Reference Frames (Jointly with Commission 2 - Unified Global Height System: W0, realization, ... SG1.1 Ionosphere Modelling and Analysis - 4-D ionosphere model: electron density (not TEC), ... SG1.2 Use of GNSS for Reference Frames - Impact of GALILEO for TRF ? ... SG1.3 Quality measures, quality control, and quality improvement - More realistic error estimates of geodetic space techniques

  9. Publications Publications of Sub-commissions, Projects and Study Groups in several scientific meetings, e.g., EUG Assembly, Nice 2004. Bulletin of Commission 1 (former CSTG Bulletin) to be continued (decision of the Steering Committee, Nice, 28 April 2004)

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