HIGH-PRECISION REAL-TIME GPS POSITIONING CONCEPTS: MODELING AND RESULTS

Nicholas C. Talbot

Peer Reviewed

Abstract: GPS has been used successfully for a wide range of high-precision surveying applications. Most precise positioning results have been achieved through post-processing of data. This denies the use of GPS for those surveying and navigation applications which require on-line position computation. A Kalman filtering scheme is presented which is designed to perform high-integrity, real-time GPS relative positioning in static and kinematic modes to centimeter-level accuracy. A continuous-kinematic data set for a train has been processed as an example to explain the operation of the system and illustrate achievable accuracy. Results of the test proved that the repeatability of vertical positions for a train traveling at 120 km/h was better than 5 cm.
Published in: NAVIGATION, Journal of the Institute of Navigation, Volume 38, Number 2
Pages: 147 - 162
Cite this article: Talbot, Nicholas C., "HIGH-PRECISION REAL-TIME GPS POSITIONING CONCEPTS: MODELING AND RESULTS", NAVIGATION, Journal of The Institute of Navigation, Vol. 38, No. 2, Summer 1991, pp. 147-162.
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