多站三角定位中样本均值的性能分析  

Performance Analysis of Sample Mean in Multi-sensor Triangulation Localization

作　　者：王本才[1] 何友[1] 王国宏[1] 杜春梅[2] 

机构地区：[1]海军航空工程学院信息融合技术研究所,山东烟台264001 [2]空军航空大学航空电子工程系,长春130022

出　　处：《光电工程》2011年第8期35-40,46,共7页Opto-Electronic Engineering

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

摘　　要：为了明确传感器配置形式及传感器数量对定位精度的影响,在全局坐标系下对多站三角定位中样本均值的定位性能进行了分析。首先根据一致性的定义研究了交点间的相关性及切比雪夫条件,进而指出多站三角定位中的样本均值是一种非一致性估计;然后结合传感器配置形式对定位精度的影响,分析了样本均值近似具有一致性的条件;最后讨论了一致性与多站定位精度之间的关系以及一致性在规则、不规则传感器配置形式中的本质区别。仿真结果验证了上述样本均值定位性能的分析,指出本文结论可以应用到基于传感器管理的多站无源定位算法中。To clarify the effect of sensor allocation form and the number of sensors on the localization precision,the localization performance of sample mean in multi-sensor triangulation localization is analyzed in the global coordinate system.First,the correlation between intersections and the Chebyshev condition is studied according to the consistency definition,which indicates that the sample mean in multi-sensor triangulation localization is a kind of inconsistency estimator.Second,combined with the effect of sensor allocation form on the localization precision,the approximate consistency condition of sample mean is analyzed.Finally,the relationship between consistency and multi-sensor localization precision,and the essential difference about consistency in the regular and irregular sensor allocation form are discussed respectively.Simulation results verify the analysis about the localization performance of the sample mean,which can be applied to multi-sensor passive localization algorithms based on sensor management.

关 键 词：三角定位 样本均值 一致性 切比雪夫条件 传感器配置 

分 类 号：TN953.5[电子电信—信号与信息处理] TN953.7[电子电信—信息与通信工程]