Exploring the Limits of GPS-Based Precise Orbit Determination
| Autor: | G. W. Davis |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Geopotential
business.industry Aerospace Engineering Geodetic datum Tracking (particle physics) Geodesy Physics::Geophysics Assisted GPS Physics::Space Physics Global Positioning System Orbit (dynamics) Astrophysics::Earth and Planetary Astrophysics Altimeter Electrical and Electronic Engineering business Orbit determination Physics::Atmospheric and Oceanic Physics Geology Remote sensing |
| Zdroj: | Navigation. 44:183-193 |
| ISSN: | 0028-1522 |
| DOI: | 10.1002/j.2161-4296.1997.tb02342.x |
| Popis: | High-fidelity numerical simulations were conducted to assess the anticipated level of radial orbit error for low-altitude geodetic and oceanographic satellites tracked by GPS. Tracking data were simulated for a GPS flight receiver in 700 and 300 km altitude polar orbits and for a ground network of 24 GPS tracking stations. The simulations suggest that it should be possible to achieve 3 cm radial orbit accuracy for altitudes in the 700 km range, either with tuning of the geopotential or with filtering techniques that exploit the continuous, three-dimensional nature of GPS tracking. The simulations also suggest it should be possible to achieve 6 cm radial orbit accuracy for altitudes in the 300 km range. To improve upon this level of accuracy at such low altitudes, improvement of the geopotential and atmospheric drag models will probably be required. |
| Databáze: | OpenAIRE |
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