交叉台链无线电导航定位中几何精度因子算法  

Algorithm of Cross-Stations Radio Navigation GDOP

作　　者：刘睿[1] 高敬东[2] 朱银兵[1] 

机构地区：[1]海军工程大学电气与信息工程学院,湖北武汉430033 [2]海军工程大学训练部,湖北武汉430033

出　　处：《测绘科学技术学报》2011年第2期98-100,104,共4页Journal of Geomatics Science and Technology

基　　金：国家自然科学基金资助项目(61004126)

摘　　要：罗兰C系统常用单台链双曲线算法进行定位。我国台站的分布导致定位精度下降,为了改善台站分布对精度的影响,对罗兰C交叉台链双曲线的几何精度因子(GDOP)算法进行了推导。并运用MATLAB工具仿真了南海(16°N,107°E)到(25°N,118°E)区域的几何定位因子分布。对单台链和交叉台链算法的几何精度因子进行了对比,结果表明在两个台对的交叉区域利用交叉台链算法进行定位,能够提高定位精度。Loran-C system commonly uses single chain hyperbola positioning algorithm.China stations distribution causes positioning accuracy declining.In order to improve the positioning accuracy,the cross-stations hyperbolic positioning GDOP algorithm was deduced.And GDOP regional distribution of the South China Sea area（16°N,107°E） to（25°N,118°E） was simulated by MATLAB software.The comparison between the GDOP values of single chain Hyperbola and cross-stations algorithm was carried on.The result indicated that poisoning with cross-stations algorithm in the cross-region of two sets of stations was able to improve the accuracy.

关 键 词：罗兰C 单台链 交叉台链 无线电导航 几何精度因子 

分 类 号：P228[天文地球—大地测量学与测量工程]