Swisstopo lpt report 2006 2007
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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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Swisstopo lpt report 2006 2007

swisstopo (LPT) Report 2006/2007

E. Brockmann


Euref eumetnet mou

EUREF – EUMETNET MoU

  • Signed at EUREF06 in London

  • Good bases for further collaboration between E-GVAP and EUREF


Monitoring nrt solutions

Monitoring NRT solutions

  • Only graphical adaptations to new corporate design

  • New internet system planned till end of the year


Processing

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


Station paye first gnss update

Station PAYE (first GNSS update)

Stefan Schaer Daniel Ineichen Elmar Brockmann

June 14, 2007


Optimised baseline selection strategy

Optimised baseline selection strategy

MAX-OBS-> MAX-OBS / SHORTEST / GNSS Baselines

(not yet included: Receiver Type)


Swisstopo lpt report 2006 2007

GPS

Aug 2007

DOY 2007


Swisstopo lpt report 2006 2007

GPS + GLONASS

Aug 2007

DOY 2007


Swisstopo lpt report 2006 2007

GPS + GLONASS

Aug 2007

DOY 2007


Validation postprocessing nrt rrt

Validation Postprocessing – NRT – RRT

Reference: PP Rel.-Cal.

PP Abs.-Cal. + GNSS

NRT Abs.-Cal.

GNSS


Influence antenna model rel pcv abs pcv

Influence Antenna ModelRel. PCV -> abs. PCV


Epn tropo combination

EPN Tropo combination

Refined processing options.


Summary

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.


Action items

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


Validation reference pp gnss abs cal

Validation: Reference PP GNSS ABS-CAL

PP Abs.-Cal. + GNSS


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