| 一种改进的GPS测码伪距单点定位算法 |
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| 引用本文： | 田安红,付承彪,赵珊.一种改进的GPS测码伪距单点定位算法[J].重庆邮电学院学报(自然科学版),2009(6). |
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| 作者姓名： | 田安红 付承彪 赵珊 |
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| 作者单位： | 重庆邮电大学移动通信技术重点实验室;重庆邮电大学通信网与测试技术重点实验室; |
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| 摘 要： | GPS是通过在同一时刻观测4颗以上的卫星,利用伪距观测量来解算出接收机的位置和钟差。针对传统的迭代最小二乘算法精度依赖于初始值的估计,且迭代计算量大,给出了一种改进的求差算法,即将GPS单点定位的非线性观测方程转化成线性方程直接求解测站坐标。利用VC编程提取出GPS接收机纪录的数据,通过仿真表明该算法计算简单,不需要观测站的初始值,不需要求导计算和迭代计算,从而验证了这种改进算法的优越性。
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| 关 键 词： | 单点定位 最小二乘 求差法 几何精度因子(GDOP) |
An improved algorithm for single point position of GPS with code pseudo-range |
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| TIAN An-hong,FU Cheng-biao,ZHAO Shan.An improved algorithm for single point position of GPS with code pseudo-range[J].Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition),2009(6). |
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| Authors: | TIAN An-hong FU Cheng-biao ZHAO Shan |
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| Institution: | TIAN An-hong1,FU Cheng-biao2,ZHAO Shan1(1.Key Lab of Mobile Communication Technology,Chongqing University of Posts , Telecommunications,Chongqing 400065,P.R.China,2.Key Lab of Communication Networks , Test Technology,P.R.China) |
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| Abstract: | 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 improv... |
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| Keywords: | single point position least square differential position value of geometric dilution of precision(GDOP) |
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