The design of a novel coherent noise jammer against LFM radar

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 50MHz to 1150MHz 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.

[1]  Mengdao Xing,et al.  High-Resolution Inverse Synthetic Aperture Radar Imaging and Scaling With Sparse Aperture , 2015, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing.

[2]  Bao Zheng.  A novel ISAR jamming method based on rotating angular reflectors , 2008 .

[3]  Fernando A. LeDantec.  Performance Analysis of a Digital Image Synthesizer as a Counter-Measure Against Inverse Synthetic Aperture Radar , 2002 .

[4]  Jiawei Jiang,et al.  Analysis of active noise jamming against synthetic aperture radar ground moving target indication , 2015, 2015 8th International Congress on Image and Signal Processing (CISP).

[5]  Xiaoyi Pan,et al.  A Three-Stage Active Cancellation Method Against Synthetic Aperture Radar , 2015, IEEE Sensors Journal.

[6]  Mengdao Xing,et al.  New ISAR imaging algorithm based on modified Wigner–Ville distribution , 2009 .

[7]  Xiaoyi Pan,et al.  A frequency-domain three-stage algorithm for active deception jamming against synthetic aperture radar , 2014 .

[8]  Feng Zhou,et al.  Multiple Targets Deception Jamming Against ISAR Using Electromagnetic Properties , 2015, IEEE Sensors Journal.

[9]  Xiang Li,et al.  Mathematic principle of active jamming against wideband LFM radar , 2015 .

[10]  Bo Zhao,et al.  A Large Scene Deceptive Jamming Method for Space-Borne SAR , 2013, IEEE Transactions on Geoscience and Remote Sensing.

[11]  D. J. Fouts,et al.  A single-chip false target radar image generator for countering wideband imaging radars , 2002, IEEE J. Solid State Circuits.