基于WGS-84椭球切平面的双星时差频差定位方法及精度分析  

Location Method and Error Analysis for Dual-satellite TDOA and FDOA Based on Tangent Plane of WSG-84 Model

作　　者：何爱林[1] 徐慨[1] 鲍凯[2] 郑士伟 

机构地区：[1]海军工程大学电子工程学院,武汉430033 [2]海军潜艇学院,山东青岛266000 [3]391917部队,北京102400

出　　处：《弹箭与制导学报》2014年第2期160-164,共5页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：针对卫星干扰源定位问题,提出了利用地理信息系统及使用WSG-84坐标系的精确定位模型;在此基础上,提出了利用地球圆球面进行解析粗定位与利用WSG-84椭球面切平面进行迭代精定位相结合的综合定位算法,推导了定位算法的理论误差表达式。由仿真结果可知,该系统利用地理信息系统辅助时,相比于时差误差和频差误差带来的系统误差,高程误差带来的系统误差可以忽略。In view of satellite interference location,a precise location model using geographic information system and WGS-84 coordinate was presented,an integrative algorithm using spherical surface for coarse analytic locating and tangent plane for precise iterative locating was therefore proposed,and the theoretical error expression for location method was deduced. According to the location simulation result, when using geographic information system,compared with TDOA error and FDOA error,the location error caused by height error can be neglected.

关 键 词：TDOA FDOA 双星定位 误差分析 切平面 

分 类 号：P288.1[天文地球—地图制图学与地理信息工程]