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Precise orbit determination for nasa's earth observing system using gps (global positioning system)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Williams, B. G. |
| Copyright Year | 1988 |
| Description | An application of a precision orbit determination technique for NASA's Earth Observing System (EOS) using the Global Positioning System (GPS) is described. This technique allows the geometric information from measurements of GPS carrier phase and P-code pseudo-range to be exploited while minimizing requirements for precision dynamical modeling. The method combines geometric and dynamic information to determine the spacecraft trajectory; the weight on the dynamic information is controlled by adjusting fictitious spacecraft accelerations in three dimensions which are treated as first order exponentially time correlated stochastic processes. By varying the time correlation and uncertainty of the stochastic accelerations, the technique can range from purely geometric to purely dynamic. Performance estimates for this technique as applied to the orbit geometry planned for the EOS platforms indicate that decimeter accuracies for EOS orbit position may be obtainable. The sensitivity of the predicted orbit uncertainties to model errors for station locations, nongravitational platform accelerations, and Earth gravity is also presented. |
| File Size | 686830 |
| Page Count | 12 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19890000817 |
| Archival Resource Key | ark:/13960/t9w13zk7d |
| Language | English |
| Publisher Date | 1988-08-15 |
| Access Restriction | Open |
| Subject Keyword | Astrodynamics Earth Observing System Eos Satellite Orbits Spacecraft Trajectories Stochastic Processes Time Functions Orbit Calculation Global Positioning System Angular Acceleration Orbital Position Estimation Position Errors Weighting Functions Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
