一种阵列互耦影响下的目标直接定位算法及其理论性能分析

doi:10.3969/j.issn.0372-2112.2017.05.016

电子学报 ›› 2017, Vol. 45 ›› Issue (5): 1130-1138.DOI: 10.3969/j.issn.0372-2112.2017.05.016

一种阵列互耦影响下的目标直接定位算法及其理论性能分析

王鼎¹, 张瑞杰², 张涛³

1. 解放军信息工程大学信息系统工程学院, 河南郑州 450002;
2. 解放军信息工程大学数学工程与先进计算国家重点实验室, 河南郑州 450002;
3. 南京军区军务部, 江苏南京 210018

收稿日期:2015-03-10 修回日期:2016-10-19 出版日期:2017-05-25
- 作者简介:
- 王鼎男,1982年生于安徽芜湖,博士(后).现为解放军信息工程大学信息系统工程学院副教授.主要研究方向为无源定位和阵列信号处理.E-mail:wang_ding814@aliyun.com;张瑞杰 女,1984年生于河南郑州,博士.现为信息工程大学四院讲师,主要从事网络舆情分析、图像场景分类与检索、无源定位等方面的相关研究.E-mail:rjz_wonder@163.com
- 基金资助:
- 国家自然科学基金 (No.61201381）; 中国博士后科学基金面上项目 (No.2016M592989）; 信息工程大学优秀青年基金 (No.2016603201）; 信息工程大学自主科研基金 (No.2016600701）

A Direct Position Determination Approach for Radio Emitters in Presence of Mutual Coupling

WANG Ding¹, ZHANG Rui-jie², ZHANG Tao³

1. Institute of Information System Engineering, PLA Information Engineering University, Zhengzhou, Henan 450002, China;
2. State key laboratory of mathematical engineering and advanced computing, PLA Information Engineering University, Zhengzhou, Henan 450002, China;
3. Nanjing military region military affairs department, Nanjing, Jiangsu 210018, China

Received:2015-03-10 Revised:2016-10-19 Online:2017-05-25 Published:2017-05-25

摘要/Abstract

摘要：

相比传统的两步定位方法，以Weiss和Amar等人提出的目标位置直接确定方法具有定位精度高、目标分辨率高、可避免"目标-量测"匹配等优势.本文基于该类定位方法的思想，提出了一种利用单个运动天线阵列对目标辐射源的直接定位算法.与已有直接定位算法不同的是，文中新算法考虑了阵列互耦的影响，并且能够实现阵列互耦参量和目标位置参量的解耦合估计.此外，文中还基于矩阵特征值扰动理论，定量推导了新算法参数估计的理论方差（包括目标位置估计方差和互耦向量估计方差），并且给出了全部参量估计方差的克拉美罗界.最后，该文通过仿真实验验证了新算法的优越性和理论分析的有效性.

关键词: 位置直接确定, 辐射源, 运动天线阵列, 互耦, 理论性能分析, 克拉美罗界

Abstract:

Compared to the conventional two-step localization method,the direct position determination (DPD) methods presented by Weiss and Amar have more advantages,such as high precision,strong resolution capability,no measurements-sources association issue,etc.Based on the idea behind the novel localization mechanism,a new DPD method using the passive measurements made with a moving antenna array is proposed in this paper.Unlike the previous approaches,the proposed DPD method considers the effects of array mutual coupling and can decouple the target's positions and mutual coupling coefficients so that they can be solved separately.In addition,the theoretical estimation variance of the new DPD algorithm is derived in analytical manner based on the matrix eigen-perturbation theory.Finally,simulation results demonstrate the superiority of the proposed algorithm and the effectiveness of the theoretical analysis in this paper.

Key words: direct position determination (DPD), radio emitters, moving antenna array, mutual coupling, theoretical performance analysis, Cramé, r-Rao bound (CRB)

中图分类号:

TN911.7

王鼎, 张瑞杰, 张涛. 一种阵列互耦影响下的目标直接定位算法及其理论性能分析[J]. 电子学报, 2017, 45(5): 1130-1138.

WANG Ding, ZHANG Rui-jie, ZHANG Tao. A Direct Position Determination Approach for Radio Emitters in Presence of Mutual Coupling[J]. Acta Electronica Sinica, 2017, 45(5): 1130-1138.

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一种阵列互耦影响下的目标直接定位算法及其理论性能分析

A Direct Position Determination Approach for Radio Emitters in Presence of Mutual Coupling

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