ISSN: 1673-825X    Imprint: Chongqing University of Posts and Telecommunications Journal
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An improved algorithm for single point position of GPS with code pseudo-range
Received:December 02, 2008  
中文关键词:单点定位  最小二乘  求差法  几何精度因子(GDOP)
英文关键词:single point position  least square  differential position  value of geometric dilution of precision(GDOP)
Author NameAffiliation
TIAN An-hong, FU Cheng-biao, ZHAO Shan Key Lab of Mobile Communication Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, P. R. China 
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      GPS uses pseudo-range measurements to calculate the receiver's location and clock by observing more than 4 satellites. The traditional iterative least-squares algorithm accuracy depends on the value of the initial estimates, and the iterative calculation is large. Hence, an improved algorithm is given, and it can be used to transform nonlinear equations to linear equations by differentiating to solve station coordinates. VC program extracted GPS receivers' record data, the simulation results showed that the improved algorithm is simple and does not require the initial value, derivative calculation and iteration calculation, which verifies the superiority of the algorithm.
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