高精度测向辅助的三星时差定位算法  

Passive Location Method for Three-Satellite TDOA System Using Accurate Bearings

作　　者：程小震[1] 唐宏[1] 王元利[1] 梁路江[1] 

机构地区：[1]空军工程大学导弹学院,三原713800

出　　处：《电子信息对抗技术》2010年第6期11-16,共6页Electronic Information Warfare Technology

摘　　要：针对传统的三星时差无源定位算法不能求解辐射源高程这一问题,提出了以高精度测向作为辅助对辐射源进行定位的算法。从该算法的定位原理入手,建立了其定位模型并分析了其定位误差;同时提出采用UKF算法对多次测量的结果进行处理以提高定位的精度;最后对该算法进行了计算机仿真。研究表明,该算法不需要进行高程假设即可实现对辐射源的快速高精度无源定位。In order to solve the problem that the height of the emitter can＇t be calculated in the traditional three-satellite TDOA passive location system,a novel method using accurate bearings is proposed.The location model is established and the location error is analyzed based on the principle of the new method. The results are processed by UKF to improve the location precision as well.Computer simulations show that the new method can locate the emitter without the assumption of its height.

关 键 词：无源定位 时差 卫星 干涉仪 

分 类 号：TN971.1[电子电信—信号与信息处理]