摘要
针对使用三星组成卫星簇对地面辐射源定位的问题,提出使用WGS-84地球椭球模型作为精确定位模型;在该模型基础上,为解决非线性求解问题,提出了一种使用球面迭代格式的迭代定位算法;最后给出了仿真结果。研究表明,当高程假设的误差在一定范围内时,该定位模型具有较好的性能;球面迭代算法快速有效。
The problem of locating a ground emitter passively using TDOA measurements of 3 satellites is discussed.First,a precise location model based on WGS-84 ellipsoid earth model is given.Then,to solve the nonlinear equations of this model,a sphere recursion algorithm is discussed.At last,simulation results are presented.As the results shown,the location model has good performance if the input height error is within some limits,the recursion algorithm converges rapidly and is effective.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2003年第6期569-573,共5页
Journal of Astronautics
关键词
无源定位
时差定位
卫星定位
定位算法
Passive location
TDOA location
Satellite location
Location algorithm
