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Observing a GPS Satellite Maneuver with MW and SLR

Observing a GPS Satellite Maneuver with MW and SLR. Astronomical Institute, University of Bern. Claudia Urschl. Experiment history. Maneuver for GPS satellite GPS35. Maneuver announced for May 17, 2005 between 20:30 - 08:10 UT Request for tracking via e-mail to SLR stations (ilrssta)

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Observing a GPS Satellite Maneuver with MW and SLR

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  1. Observing a GPS Satellite Maneuver with MW and SLR Astronomical Institute, University of Bern Claudia Urschl

  2. Experiment history Maneuver for GPS satellite GPS35 • Maneuver announced for May 17, 2005 between 20:30 - 08:10 UT • Request for tracking via e-mail to SLR stations (ilrssta) • Maneuver took place at 22:28 UT • Bad weather conditions • Only Herstmonceux (7840) tracked GPS35 during the maneuver • Fullrate data (148) 22:11 – 23:08 UT Astronomical Institute, University of Bern

  3. First orbit solution Maneuver at 22:28:17 Astronomical Institute, University of Bern

  4. First orbit solution (zoom) Maneuver Astronomical Institute, University of Bern

  5. Ground track GPS35 KIRU 7840 CHUR GOPE Maneuver KOUR Astronomical Institute, University of Bern

  6. First orbit solution Dt = 234 s Astronomical Institute, University of Bern

  7. Improved orbit Maneuver Astronomical Institute, University of Bern

  8. Maneuver evaluation Orbit determination: a = 0.88 mm/s2 Dt = 234 s Assumption: m = 975 kg vGAS = 200 m/s Dv = 0.2 m/s F = 0.86 N MGAS = 1 kg Dv = a • Dt F = m • a MGAS = Dv / vGAS • m Astronomical Institute, University of Bern

  9. GPS Satellite Maneuvers since 2004 May 17 Astronomical Institute, University of Bern

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