GPS伪距导航定位解算新算法研究  

Study of New Algorithm in Resolving Pseudo-distance Navigation and Position of GPS

作　　者：张云鹏[1] 缪栋[1] 杨小冈[1] 吴强[1] 

机构地区：[1]西安第二炮兵工程学院303教研室,西安710025

出　　处：《电子科技》2004年第1期47-50,共4页Electronic Science and Technology

摘　　要：为提高全球卫星定位系统(GPS)中伪距导航定位解算的精度和改善对动态目标的实时跟踪,文中提出了一种新方法,采用镜像映射法解具有病态的矛盾方程组以提高精度,以及将伪距导航定位解算方程模型转换为具有贯序输入输出数据的系统辩识模型,然后用递推最小二乘法,对所求的GPS伪距导航定位信息──接收机的三维位置参数和时钟误差参数进行动态快速实时估计。A new method for increasing the accuracy of the pseudo-distance navigation and improving the real-time traceability to the dynamic object is presented. The method is using Householder transformation to solve inconsistent equation to increase accuracy, converting the equation of the pseudo-distance navigation into the system identification model which has sequential input-output data and then using recursive method of minimum square to estimate the pseudo-distance navigation information-three-dimensional positional parameters and timing clock error parameter in GPS fast, dynamically and real-timely.

关 键 词：GPS 伪距 导航定位解算 全球卫星定位系统 镜像映射法 递推最小二乘法 

分 类 号：P228.4[天文地球—大地测量学与测量工程]