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

Abstract

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

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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[1]	GUO Shuai;WANG Jun;CHEN Gang;WANG Jue. Method for multipath interference restraint of the reference channel in passive bistatic radar [J]. Journal of Xidian University, 2018, 45(3): 18-23.
[2]	WANG Jianwei;ZHANG Hailin. Cumulative distribution function based resource allocation in the uplink of the small cells network [J]. Journal of Xidian University, 2018, 45(3): 163-168.
[3]	ZHANG Gege;WANG Jun;WU Riheng. Cyclostationary signal DOA estimation under complex environment [J]. J4, 2015, 42(1): 91-97.

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

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