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In order to jamming ISAR imaging effectively, a novel jamming method based on randomly sinusoidal phase modulation is presented in this paper. This method changes randomly the frequency of the signal of sinusoidal phase modulation in the slow time. How the jamming signal affects the range alignment of ISAR is analyzed in detail. The research result shows that the jamming method can destroy severely...
One of the main features of IS AR target recognition is the micro-motion feature. In order to jamming target recognition of IS AR, a micro-motion feature deception jamming method to ISAR based on digital image synthesizer is presented in this paper. In this method, the constant Doppler frequency of the scatterer in the template of false-target is replaced by the time-varying micro-Doppler frequency...
Study on evaluation methods of ISAR jamming effect is to be an important research problem in electronic countermeasures (ECM). Up to now there is no generally accepted progress and objective criterion published. In this paper, on the basis of studying the image model of ISAR point target used the most classical range-Doppler(R-D) algorithm, equivalent jamming-to-signal ratio (EJSR) is utilized, and...
The inverse synthetic aperture radar (ISAR) is a high resolution imaging radar. Some methods used to evaluate the jamming effect of general radar are unsuitable to ISAR. Considering the principle of radar jamming and the theory of image disposal, the paper gives new evaluation methods of barrage jamming effect on ISAR, These methods can reflect clearly distortion degree of the jammed target during...
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