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swisstopo (LPT) Report 2006/2007

swisstopo (LPT) Report 2006/2007. E. Brockmann. EUREF – EUMETNET MoU. Signed at EUREF06 in London Good bases for further collaboration between E-GVAP and EUREF. Monitoring NRT solutions. Only graphical adaptations to new corporate design New internet system planned till end of the year.

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swisstopo (LPT) Report 2006/2007

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  1. swisstopo (LPT) Report 2006/2007 E. Brockmann

  2. EUREF – EUMETNET MoU • Signed at EUREF06 in London • Good bases for further collaboration between E-GVAP and EUREF

  3. Monitoring NRT solutions • Only graphical adaptations to new corporate design • New internet system planned till end of the year

  4. Processing • Bernese Software 5.0 (+) • ~ same number of stations • Absolute antenna model since GPS week 1401 (Nov. 2006) • GNSS PP analyses (GLONASS ambiguities float) since week 1401 • GNSS enhancement of AGNES in June/July 2007: 2/3 of the stations with GNSS receivers equipped • GNSS NRT analyses(GLONASS ambiguities fixed) since 2 weeks

  5. Station PAYE (first GNSS update) Stefan Schaer Daniel Ineichen Elmar Brockmann June 14, 2007

  6. Optimised baseline selection strategy MAX-OBS-> MAX-OBS / SHORTEST / GNSS Baselines (not yet included: Receiver Type)

  7. GPS Aug 2007 DOY 2007

  8. GPS + GLONASS Aug 2007 DOY 2007

  9. GPS + GLONASS Aug 2007 DOY 2007

  10. Validation Postprocessing – NRT – RRT Reference: PP Rel.-Cal. PP Abs.-Cal. + GNSS NRT Abs.-Cal. GNSS

  11. Influence Antenna ModelRel. PCV -> abs. PCV

  12. EPN Tropo combination Refined processing options.

  13. Summary • Absolute antenna phase center model used since GPSWeek 1400 (Nov. 2006) for NRT and PP. Influence is 4-12 mm dependent of antenna type on the station • GNSS processing (ambiguity float) introduced in postprocessed solutions since GPSWeek 1401. The influence on ZTD is very small. • 2/3 of the AGNES sites with GNSS receivers • New baseline strategy (shorter baselines) is a prerequisite for GNSS ambiguity resolution. • GNSS ambiguity fixed solutions since 2 weeks. Influence on NRT need to be validated.

  14. Action Items • Installation of remaining 10 AGNES sites: GPS -> GNSS (double station concept) • Ambiguity resolution GNSS for longer baselines and for mixed receivers including proper inter-phase bias handling (-> hope to realize improvements for NRT ZTD + GNSS-tomography) • More “Super Sites” in LPT processing

  15. Validation: Reference PP GNSS ABS-CAL PP Abs.-Cal. + GNSS

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