A position fixing algorithm for the low-cost GPS receiver
Abstract
The global positioning system (GPS) is a satellite navigation system currently under development by the Department of Defense. This correspondence describes a new position fix algorithm for a low-cost GPS receiver. The algorithm uses Hotelling's method to iteratively update the inverse of the measurement matrix for correction of the navigation position, so no dead reckoning procedure is required. A stationary user/satellite system model is assumed, and numerical convergence properties are tested for specified user position errors. Typically, convergence is assured if the last position estimate is within 6000 nmi of the true position.
- Publication:
-
IEEE Transactions on Aerospace Electronic Systems
- Pub Date:
- March 1976
- DOI:
- 10.1109/TAES.1976.308310
- Bibcode:
- 1976ITAES..12..295N
- Keywords:
-
- Low Cost;
- Position Errors;
- Position Indicators;
- Radio Receivers;
- Satellite Navigation Systems;
- Synoptic Measurement;
- Algorithms;
- Computerized Simulation;
- Convergence;
- Instrument Errors;
- Navstar Satellites;
- Space Communications, Spacecraft Communications, Command and Tracking