Comparison on Radar Echo Cancellation Techniques for SAR Jamming

摘要

To protect a target from detection by SAR, radar jamming is used. Echo cancellation of target is an inventive method which protects the target being detected by radar. There are different types of jamming methods which can prevent the target from detection. In this paper studied different types of echo cancellation methods, their advantages and disadvantages and also the difference between LFM and NLFM radar signals used in echo cancellation methods. Proposed jamming technique uses a nonlinear frequency modulation (NLFM) waveform to increase the output SNR and a nonperiodic interrupted sampling for generation of echo cancellation signal to produce high-amplitude side lobes to perform continuous jamming at the target area.