多站无源定位最佳配置分析  

Optimal allocation of multi-sensor passive localization

作　　者：王本才[1,2] 何友[1] 王国宏[1] 修建娟[1] 

机构地区：[1]海军航空工程学院信息融合技术研究所 [2]中国人民解放军93286部队

出　　处：《中国科学：信息科学》2011年第10期1251-1267,共17页Scientia Sinica(Informationis)

基　　金：国家自然科学基金(批准号:60801049);全国优秀博士学位论文作者专项基金(批准号:200443);"泰山学者"建设工程专项经费资助项目

摘　　要：为了提高多站无源定位精度,以LS算法的GDOP为基础对多站测向交叉定位的最佳配置形式进行了分析.指出当目标位于多传感器形成的闭合区域内、外侧时,其最佳配置形式是各相邻传感器间夹角相同,且传感器位于以目标位置(同时为坐标系原点)为圆心的外接圆上;如果在该最佳形式中没有对相邻夹角的限制,则LS算法可以达到方差最小意义下的最优估计;文中同时对最优估计及最佳配置条件下LS算法的一致性进行了分析.仿真结果验证了最佳配置形式的分析,并指出该形式可以应用到基于传感器管理的多站无源定位算法中.To improve multi-sensor passive localization precision,the optimal allocation form of multi-sensor bearing-only localization is analyzed from the perspective of the geometric dilution of precision （GDOP） of the least squares （LS） algorithm.This paper indicates that whether the target lies inside the closed region formed by the sensors or not,the optimal allocation is when each adjacent cut angle between a sensor pair is identical,and all sensors are located on the border of the circle that has the target （which is also the origin of the coordinatesystem） as its center.When there is no restriction on the adjacent cut angle in the above allocation,the optimal estimate of the LS algorithm in the sense of minimum variance can be acquired.When the LS algorithm achieves the optimal estimate and the sensors present the optimal allocation,the respective consistencies are analyzed.Simulation results verify the analysis of the optimal allocation form above,which can be used in multi-sensor passive localization algorithms based on sensor management.

关 键 词：多站无源定位 最佳配置 GDOP夹角 一致性 最优估计 

分 类 号：TN95[电子电信—信号与信息处理]