Shift-Frequency Jamming Imaging and Analysis Based on Active Radar Calibrator

This paper proposes a method of shift-frequency jamming to synthetic aperture radar (SAR) by utilizing Active Radar Calibrator (ARC). The theoretical model of shift-frequency jamming imaging is established to expose the influence of frequency shift on the range position and the azimuth defocusing of imaging results. Based on the simulation of point target imaging under different frequency shift amounts, the range position offset curve of imaging results is obtained and the azimuth defocusing of imaging results is analyzed through three indexs of the peak sidelobe ratio, the integrated sidelobe ratio and the impulse response width, so as to provide a basis for the jamming implementation of ARC.