A Batch Least Squares Implementation for Estimating Autonomous GPS Point Positions

Annabelle Colestock

Abstract:	It is desirable to obtain accurate, autonomous Global Positioning System (GPS) position estimates in near realtime. Least squares methods for computing autonomous GPS positions have been investigated at Applied Research Laboratories: The University of Texas (ARL:UT). The goal has been to obtain a total positional accuracy of better than five meters within a four hour data collection period. This paper describes a near realtime GPS position solution obtained using a Batch Least Squares method. Ashtech has implemented a similar algorithm in their new z/Y-12 receiver. Results and error analysis of this estimation method are presented with emphasis on Precise Positioning Service (PPS) data.
Published in:	Proceedings of the 7th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1994) September 20 - 23, 1994 Salt Palace Convention Center Salt Lake City, UT
Pages:	399 - 404
Cite this article:	Colestock, Annabelle, "A Batch Least Squares Implementation for Estimating Autonomous GPS Point Positions," Proceedings of the 7th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1994), Salt Lake City, UT, September 1994, pp. 399-404.
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