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Proceedings Paper

Analysis and simulations of GDOP in the location of GPS
Author(s): Zhipeng Wang; Jun Zhang
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Paper Abstract

In this paper, the GDOP (Geometric Dilution of Precision) in the location of GPS (Global Positioning System) is studied from three aspects: First, a new algorithm of GDOP is obtained by matrix factorization. The validity of the new algorithm is proved by simulation comparing with the old method. Second, the measurement accuracy of stand alone positioning with weight GDOP matrix becomes better: the 2drm decrease by 0.096m. But, measurement accuracy of DGPS (Difference GPS) with weight GDOP matrix changes little: the 2drm only decrease by 0.012m. By analyzing the principle of the DGPS, the conclusion is explained. Third, using a new parameter GDOPi to evaluate each satellite, and the method could improve the positioning accuracy of DGPS and also will be helpful the surveillance of the satellite availability.

Paper Details

Date Published: 10 November 2007
PDF: 6 pages
Proc. SPIE 6795, Second International Conference on Space Information Technology, 679572 (10 November 2007); doi: 10.1117/12.775290
Show Author Affiliations
Zhipeng Wang, Beihang Univ. (China)
Jun Zhang, Beihang Univ. (China)

Published in SPIE Proceedings Vol. 6795:
Second International Conference on Space Information Technology
Cheng Wang; Shan Zhong; Jiaolong Wei, Editor(s)

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