| 基于WGS-84地球模型的三站时差定位 |
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| 引用本文： | 高元锋,王玉林,李艳斌. 基于WGS-84地球模型的三站时差定位[J]. 无线电工程, 2007, 37(7): 23-25 |
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| 作者姓名： | 高元锋 王玉林 李艳斌 |
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| 作者单位： | 中国电子科技集团公司第54研究所,河北,石家庄,050081 |
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| 摘 要： | 时差定位根据目标到达多个站之间的时间差进行定位。三站对地面目标的定位属于三站定位问题。借助四站时差定位原理,提出先用四站时差Chan算法求解定位初值,然后用牛顿迭代法求解精确解的算法。时差定位方程加入地球方程才能构成完整的方程组,但非线性方程组的求解是一个复杂的过程。仿真试验发现,粗解精解联合求解算法以比较良好的效果解决了三站三维定位问题。
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| 关 键 词： | WGS地球模型 时差定位 Chan算法 牛顿迭代法 |
| 文章编号： | 1003-3106（2007）07-0023-03 |
| 修稿时间： | 2006-12-20 |
TDOA Location of Tri-station Based on WGS-84 Earth Model |
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| GAO Yuan-feng,WANG Yu-lin,LI Yan-bin. TDOA Location of Tri-station Based on WGS-84 Earth Model[J]. Radio Engineering of China, 2007, 37(7): 23-25 |
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| Authors: | GAO Yuan-feng WANG Yu-lin LI Yan-bin |
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| Affiliation: | The 54th Research Institute of CETC, Shijiazhuang Hebei 050081, China |
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| Abstract: | TDOA Location system finds the position of target by the time difference of target arrival to multiple stations.Tri-station ground object location is of a 3D location.This paper puts forward a new algorithm using coarse resolution by Chan algorithm of four-station TDOA equations and then exact resolution by Newton iteration.A complete set of equations consists of TDOA and earth equations.But the solving of nonlinear equations is a complex process.The method using coarse and accurate solution combination solved the issue of tri-station 3-D location according to the simulation experiment. |
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| Keywords: | WGS earth model TDOA location Chan algorithm Newton iteration |
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