航空学报 > 2013, Vol. 34 Issue (9): 2185-2193   doi: 10.7527/S1000-6893.2013.0260

运动单站干涉仪相位差直接定位方法

张敏1, 郭福成1, 周一宇1, 姚山峰2   

  1. 1. 国防科学技术大学 电子科学与工程学院, 湖南 长沙 410073;
    2. 西南电子电信技术研究所 盲信号处理国防科技重点实验室, 四川 成都 610041
  • 收稿日期:2012-11-07 修回日期:2013-05-17 出版日期:2013-09-25 发布日期:2013-05-27
  • 通讯作者: 郭福成,Tel.:0731-84573490 E-mail:gfcly@21cn.com E-mail:gfcly@21cn.com
  • 作者简介:张敏 男, 博士研究生。主要研究方向: 无源定位、跟踪滤波技术等 Tel: 0731-84573490 E-mail: zhangmin1984@126.com;郭福成 男, 博士, 教授, 硕士生导师。主要研究方向: 无源定位、跟踪滤波、信号处理技术等。Tel: 0731-84573490 E-mail: gfcly@21cn.com;周一宇 男, 博士, 教授, 博士生导师。主要研究方向: 无源定位、综合电子战技术等。Tel: 0731-84575794 E-mail: zhouyiyu@sohu.com
  • 基金资助:

    国防科技重点实验室基金(9140C860304);国家"863"计划(2011AA7072043,2011AA7072048)

A Single Moving Observer Direct Position Determination Method Using Interferometer Phase Difference

ZHANG Min1, GUO Fucheng1, ZHOU Yiyu1, YAO Shanfeng2   

  1. 1. College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China;
    2. National Defense Key Laboratory on Blind Signal Processing, Southwest Electronics and Telecommunication Technology Research Institute, Chengdu 610041, China
  • Received:2012-11-07 Revised:2013-05-17 Online:2013-09-25 Published:2013-05-27
  • Supported by:

    National Defense Key Laboratory Foundation of China (9140C860304);National High-tech Research and Development Program of China (2011AA7072043, 2011AA7072048)

摘要:

针对传统干涉仪测向定位在低信噪比(SNR)下性能降低、多频段系统复杂等缺点,本文直接利用运动单站干涉仪模糊相位差(PD)实现对地面静止辐射源定位。为解决该定位问题,结合干涉仪相位差的几何特性,提出了一种多角度距离参数化高斯和滤波(MB-RP-GMF)定位解算方法,利用相位差误差检测获得多个初始方位角,通过距离参数化得到一组滤波初始值,采用扩展卡尔曼滤波(EKF)进行定位计算。仿真结果表明,该定位方法在低信噪比下优于仅测向(BO)定位,且仅采用一组干涉仪便可对多个频段辐射源进行定位。

关键词: 无源定位, 单站, 干涉仪, 相位差, 卡尔曼滤波, 高斯和, 距离参数化

Abstract:

Due to the performance degradation under low SNR and complexity structures for multiple frequency bands using multi-channel phase interferometers, a novel single moving observer localization method for static ground emitter directly using interferometer ambiguous phase differences (PD) is proposed. To make use of the geometry characteristic of the PDs, a multiple bearing range parameterized Gaussian mixture filter (MB-RP-GMF) is advanced. Phase difference error is detected to get a set of initial azimuths and then the range parameterized method is used to attain Gaussian mixtures. The emitter position is then estimated by the extended Kalman filter (EKF) banks. Simulation results show this method outperforms the traditional bearing-only (BO) methods under low SNRs; one set of baselines can be adapted for the multiple frequency band sources.

Key words: passive localization, single observer, interferometer, phase difference, kalman filter, gaussian mixture, range parameterized method

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