Analysis and simulations of GDOP in the location of GPS

Zhipeng Wang; Jun Zhang

doi:10.1117/12.775290

10 November 2007 Analysis and simulations of GDOP in the location of GPS

Zhipeng Wang, Jun Zhang

Proceedings Volume 6795, Second International Conference on Space Information Technology; 679572 (2007) https://doi.org/10.1117/12.775290
Event: Second International Conference on Spatial Information Technology, 2007, Wuhan, China

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.

Citation Download Citation

Zhipeng Wang and Jun Zhang "Analysis and simulations of GDOP in the location of GPS", Proc. SPIE 6795, Second International Conference on Space Information Technology, 679572 (10 November 2007); https://doi.org/10.1117/12.775290

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