传感器位置误差条件下仅用到达频率差的无源定位性能分析

doi:CNKI:11-1929/V.20110517.1515.002

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传感器位置误差条件下仅用到达频率差的无源定位性能分析

李金洲, 郭福成

国防科学技术大学电子科学与工程学院, 湖南长沙 410073

收稿日期:2010-10-13 修回日期:2011-02-25 出版日期:2011-08-25 发布日期:2011-08-19
通讯作者: 郭福成,Tel.: 0731-84573490 E-mail: gfcly@21cn.com E-mail:gfcly@21cn.com
作者简介:李金洲(1986-) 男,博士研究生。主要研究方向:无源定位技术。 Tel: 0731-84573490 E-mail: lijinzhou@tsinghua.org.cn; 郭福成(1975-) 男,博士,副教授,硕士生导师。主要研究方向:无源定位、现代雷达和信息战信号处理技术。 Tel: 0731-84573490 E-mail: gfcly@21cn.com
基金资助:
国家自然科学基金(60702010);国防科学技术大学优秀研究生创新资助(S100402)

Performance Analysis for Passive Source Localization Using Merely FDOA Measurements with Erroneous Receiver Positions

LI Jinzhou, GUO Fucheng

School of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China

Received:2010-10-13 Revised:2011-02-25 Online:2011-08-25 Published:2011-08-19

摘要/Abstract

摘要： 传感器自身的位置误差对辐射源的无源定位精度可能有较大影响,详细分析并推导了在存在传感器位置误差条件下,仅使用到达频率差(FDOA)参数对辐射源定位时,定位精度的克拉美罗下限(CRLB)和均方误差(MSE)。在传感器位置误差条件下,提出仅用FDOA来同时估计辐射源和传感器位置的泰勒级数方法,并证明该定位方法理论上的MSE和CRLB一致。实验中在给定较好初始解的情况下,泰勒级数方法的估计精度基本上达到了CRLB,同时也验证了定位误差CRLB和MSE性能理论分析的正确性。

关键词: 无源定位, 到达频率差, 泰勒级数, 克拉美罗下限, 均方误差

Abstract: The accuracy of passive localization is very sensitive to erroneous receiver positions. This paper performs a Cramer-Rao lower bound(CRLB)and a mean-square error(MSE)analysis for passive localization using frequency-difference-of-arrival(FDOA)only. An iterative algorithm, the Taylor-series method, is applied to estimate the location of an emitter and the positions of receivers using FDOA measurements when the receivers have random position errors. The theoretical MSE of the algorithm is derived and proved to meet the CRLB. Given a good initial solution guess, simulation results show that the estimation accuracy approximately attains the CRLB and demonstrate the feasibility of the accuracy analysis.

Key words: passive localization, frequency-difference-of-arrival, Taylor series, Cramer-Rao lower bound, meansquare error

中图分类号:

李金洲, 郭福成. 传感器位置误差条件下仅用到达频率差的无源定位性能分析[J]. 航空学报, 2011, 32(8): 1497-1505.

LI Jinzhou, GUO Fucheng. Performance Analysis for Passive Source Localization Using Merely FDOA Measurements with Erroneous Receiver Positions[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2011, 32(8): 1497-1505.

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E-mail：hkxb@buaa.edu.cn

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传感器位置误差条件下仅用到达频率差的无源定位性能分析

Performance Analysis for Passive Source Localization Using Merely FDOA Measurements with Erroneous Receiver Positions

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