Deception Jamming Against ISAR based on Frequency-stepped Chirp Signal with the Time Delay

ISAR based on frequency-stepped chirp signal has greater capability of anti-jamming than that of the conventional radar due to its peculiar characteristic. Frequency-stepped chirp signal can achieve total large bandwidth while maintaining narrow instantaneous bandwidth, thus reducing the complexity of radar systems. A method of jamming the ISAR imaging is proposed, where the received signal is retransmitted after the time delay has been done on the cross-range and the range. Therefore the false targets can be constructed and the deception jamming against frequency-stepped ISAR is successfully accomplished. Simulations are given to validate the effectiveness of the proposed method.