The design of a novel coherent noise jammer against LFM radar

IEICE Electronics Express

Kaibo Cui¹  Chao Wang¹  Naichang Yuan¹  Ning Tai¹ 

[1] College of Electronic Science and Engineering, National University of Defense Technology

关键词: LFM;    electronic countermeasure;    DRFM;    pseudo-random sequence;   

DOI  :  10.1587/elex.13.20160924

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(11)In this paper, a novel coherent noise jammer is proposed against the pulse compression radar. The algorithm is implemented by modulating the sampled radar signal according to the pseudo-random sequence. A high speed ADC is adopted to sample the baseband radar signal from 50 MHz to 1150 MHz and the parallel data processing in FPGA of Virtex-6 is introduced. The characteristic of the jamming signal in time domain and frequency domain is analyzed in detail. Mathematic expressions indicate that multiple false targets are induced after pulse compression and the real target is protected effectively. Compared with the traditional non-coherent noise jammer, the jamming signal created by our jammer is coherent with the matched filter and is able to obtain some processing gain. Simulation results and the implementation of the proposed method validate the correctness and effectiveness of the design.

【 授权许可】

Unknown