系统工程与电子技术

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基于最大后验概率的单星多目标无源定位算法

姜勤波,刘壮华,郑健,余江波   

  1. 第二炮兵工程大学,陕西 西安 710025
  • 出版日期:2014-09-25 发布日期:2010-01-03

Algorithm for multi-targets passive localization with single satellite based on posterior probability maximization

JIANG Qin-bo,LIU Zhuang-hua,ZHENG jian,YU Jiang-bo   

  1. The Second Artillery Engineering University, Xi’an 710025, China
  • Online:2014-09-25 Published:2010-01-03

摘要:

为提高单星无源定位精度和速度,同时满足小型化和低功耗的要求,提出了基于最大后验概率和旋转长基线干涉仪的无源定位算法。核心思想是利用最大后验概率原理解决多辐射源信号去交织难题;利用旋转干涉仪天线基线和目标辐射源来波方向瞬时变化减小测向定位模糊,从而实现了利用单个旋转长基线干涉仪系统对多辐射源目标快速高精度定位。仿真表明,该算法可行性强,定位精度高、速度快,具有很高的应用价值。

Abstract:

In order to improve the precision and the speed of single-satellite passive localization, as well as meet the miniaturization and low-power requirements, a passive localization algorithm based on the posterior probability maximization principle and the rotating long baseline interferometer is proposed. The main idea is to use the posterior probability maximization principle to avoid multi-emitter signals separation problems; and utilize the instantaneous change in direction between the rotating interferometer antenna baselines and emitter source waves to decrease direction-finding and localization ambiguity, thus achieving fast and highprecision localization by just using a single rotating long baseline interferometer system. Simulation results show that the algorithm has good feasibility, high precision, high speed and high applicable values.