Single Source Self-Screen Jamming Elimination and Target Detection for Distributed Dual Antennas Radar System

Qiliang Zhang; Feifei Gao; Qing Sun; Xiaobo Wang

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Single Source Self-Screen Jamming Elimination and Target Detection for Distributed Dual Antennas Radar System

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摘要

Detecting target echo in the exis-tence of self-screen jamming is a challenging work for radar system, especially when digital radio frequency memory (DRFM) technique is employed that mixes the jamming and tar-get echo both in spatial and time-frequency domain. The conventional way to solve this problem would suffer from performance deg-radation when physical target (PT) and false target (FT) are superposed in time. In this paper, we propose a new spatial filter accord-ing to the different correlation characteristic between PT and FT. The filter takes the ratio of expected signal power to expected jamming and noise power as the objective function un-der the constant filter modulus constraint. The optimal filter coefficients are derived with a generalized rayleigh quotient approach. More-over, we analytically compute the target detec-tion probability and demonstrate the applica-bility of the proposed method to the correla-tion coefficient. Monte Carlo simulations are provided to corroborate the proposed studies. Furthermore, the proposed method has simple architecture and low computation complexity, making it easily applied in modern radar sys-tem.

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《中国通信》|2017年第11期|112-125|共14页
作者
Qiliang Zhang; Feifei Gao; Qing Sun; Xiaobo Wang;
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Tsinghua National Laboratory for Information Science and Technology, Beijing 100084, China;

Air Force Engineering University, Xi'an 710051, China;

Tsinghua National Laboratory for Information Science and Technology, Beijing 100084, China;

Air Force Engineering University, Xi'an 710051, China;

Tsinghua National Laboratory for Information Science and Technology, Beijing 100084, China;

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Single Source Self-Screen Jamming Elimination and Target Detection for Distributed Dual Antennas Radar System

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