A new time-delay echo jamming style to SAR

This work is concerned with developing the time-delay-based jamming technology against SAR. Traditional time-delay echo jamming can only get a point or a line false imaging when through the SAR system, which can´t protect distributed targets. This paper presents a modified time-delay echo jamming style, Time-delay Inter-pulse Jitter Echo jamming (TDIJEJ). The theoretic analysis and simulation show that this interference can obtain the fast time matched processing gain of SAR thus deduce the jamming power requirement, and generate a jamming swath output for the purpose of protecting distributed targets.