Loading...
Please wait, while we are loading the content...
Similar Documents
A comparison of gps broadcast and dma precise ephemerides
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Shattil, Steve Weiss, Marc A. Petit, Gerard |
| Copyright Year | 1994 |
| Description | We compare the broadcast ephemerides from Global Positioning Satellites (GPS) to the postprocessed ephemerides from the Defense Mapping Agency (DMA). We find significant energy in the spectrum of the residuals at 1 cycle/day and higher multiples. We estimate the time variance of the residuals and show that the short term residuals, from 15 min, exhibit power law processes with greater low frequency perturbations than white phase modulation. We discuss the significance of these results for the performance of the GPS Kalman filter which estimates the broadcast orbits. |
| File Size | 557340 |
| Page Count | 14 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19940026155 |
| Archival Resource Key | ark:/13960/t3nw4cz03 |
| Language | English |
| Publisher Date | 1994-05-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Communications And Navigation Autonomous Spacecraft Clocks Position Location Tracking Stations Satellite Tracking Global Positioning System Ephemerides Kalman Filters Ground Stations Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
