GSM信号外辐射源雷达同频干扰抑制方法

doi:10.3969/j.issn.1001-2400.2017.06.007

西安电子科技大学学报

GSM信号外辐射源雷达同频干扰抑制方法

陈刚;王俊;王珏;郭帅

(西安电子科技大学雷达信号处理国家重点实验室，陕西西安 710071)

收稿日期:2016-12-13 出版日期:2017-12-20 发布日期:2018-01-18
作者简介:陈刚(1992-)，男，西安电子科技大学博士研究生，E-mail: chengang_xidian@163.com
基金资助:
国家部委基金资助项目(9140A07020614DZ01)；国家自然科学基金资助项目(61401526)

Method of co-channel interference cancellation for the GSM based PBR

CHEN Gang;WANG Jun;WANG Jue;GUO Shuai

(National Key Lab. of Radar Signal Processing, Xidian Univ., Xi'an 710071, China)

Received:2016-12-13 Online:2017-12-20 Published:2018-01-18

摘要/Abstract

摘要：

在外辐射源雷达中，尤其是全球移动通信信号辐射源雷达中，不仅存在很强的直达波和多路径干扰，同时还存在着来自同频基站的同频干扰．在没有干扰样本的情况下，很难单独利用时域相消的方法抑制同频干扰．针对回波通道中含有同频干扰的问题，提出了一种外辐射源雷达同频干扰的抑制方法．首先利用低副瓣空域滤波消除远区的弱干扰，同时对近区的强干扰进行一定程度的抑制；然后利用时域干扰对消算法抑制来自主基站的直达波及多径干扰；最后利用稳健的自适应波束形成方法对剩余的干扰进行抑制．理论分析与计算机仿真实验表明，该方法具有良好的干扰抑制性能和较低的运算量．

关键词: 外辐射源雷达, 同频干扰, 空域滤波, 时域对消

Abstract:

In passive bistatic radar, especially in the global system for mobile communication based passive bistatic radar, there are not only strong direct signal and multipath, but also co-channel interference. It is difficult to suppress co-channel interference using temporal adaptive cancellation without the samples of interference. Aiming at the problem of co-channel interference signals existing in the echo channel, a method of co-channel interference cancellation for passive bistatic radar is proposed. First, low sidelobe spatial filtering is used to remove the remote weak interference, at the same time the strong interference is suppressed to a certain extent. Then, the direct signal and multipath signal coming from the main station are suppressed by using temporal adaptive cancellation. Finally, the remaining interference is further cancelled by a robust adaptive beamformer. The performance and calculation of the proposed method are verified by theoretical analysis and simulation.

Key words: passive bistatic radar, co-channel interference, spatial filtering, temporal cancellation

陈刚;王俊;王珏;郭帅. GSM信号外辐射源雷达同频干扰抑制方法[J]. 西安电子科技大学学报, 2017, 44(6): 37-42.

CHEN Gang;WANG Jun;WANG Jue;GUO Shuai. Method of co-channel interference cancellation for the GSM based PBR[J]. Journal of Xidian University, 2017, 44(6): 37-42.

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GSM信号外辐射源雷达同频干扰抑制方法

Method of co-channel interference cancellation for the GSM based PBR

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