系统误差条件下的多运动站无源定位性能分析
收稿日期: 2012-04-09
修回日期: 2012-11-22
网络出版日期: 2013-03-29
基金资助
航空电子系统综合技术重点实验室和航空科学基金联合资助(20105584004)
Performance Analysis for Multiple Moving Observers Passive Localization in the Presence of Systematic Errors
Received date: 2012-04-09
Revised date: 2012-11-22
Online published: 2013-03-29
Supported by
Science and Technology on Avionics Integration Laboratory and Aviation Science Foundation of China (20105584004)
徐征 , 曲长文 , 王昌海 . 系统误差条件下的多运动站无源定位性能分析[J]. 航空学报, 2013 , 34(3) : 629 -635 . DOI: 10.7527/S1000-6893.2013.0100
The presence of systematic errors may have great effect on the performance of passive localization of multiple observers. In this paper the Cramer-Rao lower bound (CRLB) is derived with respect to the measurements corrupted by systematic errors which are obtained by multiple moving observers. First, the statistical information of the measurement error is derived according to the specific systematic error model. Because of the dependence of measurements between different time instants caused by the systematic error, the error covariance matrix is non-diagonal. The recursive calculation form is then derived by rewriting the non-diagonal error covariance matrix into the form of block matrixes. Finally, simulation is performed with respect to multiple moving observers bearings-only passive localization and related localization performance analysis is made. Simulation results indicate that systematic errors can have great effect on the CRLB of location error and more attention should be paid to it.
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