Abstract: Intermittent sampling repeater jamming is a new kind of jamming means to wideband imaging radar. According to the principle of intermittent sampling repeater jamming, under its common application strategy, the jamming can add a string of bogus scatters to high resolution range profile(HRRP) of wideband imaging radar. Combing with process of imaging, it is found that the string of bogus scatters improves the quality of envelope alignment in the process of imaging. In order to solve the problem caused by intermittent sampling repeater jamming under common strategy, a new application strategy for intermittent sampling repeater jamming is put forward, which aims to disturb envelope alignment. In the new application strategy, period of intermittent sampling is changed according to some predefined random sequence. Simulation is executed, and the result shows that the new application strategy can degrade imaging quality obviously.