Radar target echo cancellation using interrupted-sampling repeater

Abstract

A method of using Interrupted-Sampling Repeater Jamming (ISRJ) to cancel radar target echo is proposed. After the principles of ISRJ are expounded, three conditions that should be met for radar echo cancellation are proposed, including range synchronization, phase coherent and amplitude match. Then, the restriction for key parameters of ISRJ, i.e. the repeater power, the delay time and frequency of repeater are deduced in theory. At last, the influences of those parameters on radar echo cancellation are discussed in detail. Some numerical results are presented to verify the effectiveness of this method. This work is beneficial to the jamming design and use of ISRJ. © IEICE 2014.