Noise jamming to ISAR based on multiplication modulation

Gong, Shixiang; Wei, Xiaofeng

doi:10.1049/cp.2013.0398

Cited by 7 publications

(1 citation statement)

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“…The researches in latest years show that false target deception jamming requires modulation process of high complexity and tremendous computation, thus noise jamming is developed and widely applied for its effectiveness and convenience. Noise jamming method is that jammer transmits noise signal or noise-like jamming signal to victim radar, which decreases the signal-to-noise ratio and prevents radar from detecting real target [23,24]. The common noise signal contains radio frequency noise, noise amplitude modulation jamming and noise phase modulation jamming.…”

Section: Introductionmentioning

confidence: 99%

Quasi-Coherent Noise Jamming to LFM Radar Based on Pseudo-random Sequence Phase-modulation

Tai¹,

Yuan²,

Pan³

2015

RADIOENGINEERING

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A novel quasi-coherent noise jamming method is proposed against linear frequency modulation (LFM) signal and pulse compression radar. Based on the structure of digital radio frequency memory (DRFM), the jamming signal is acquired by the pseudo-random sequence phase-modulation of sampled radar signal. The characteristic of jamming signal in time domain and frequency domain is analyzed in detail. Results of ambiguity function indicate that the blanket jamming effect along the range direction will be formed when jamming signal passes through the matched filter. By flexible controlling the parameters of interrupted-sampling pulse and pseudo-random sequence, different covering distances and jamming effects will be achieved. When the jamming power is equivalent, this jamming obtains higher process gain compared with non-coherent jamming. The jamming signal enhances the detection threshold and the real target avoids being detected. Simulation results and circuit engineering implementation validate that the jamming signal covers real target effectively.

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Section: Introductionmentioning

confidence: 99%