A Smart Multitransmitter Cooperative False Images Generation Method Against Multichannel SAR-GMTI.

Existing false moving target generation methods face challenges such as uncontrollable position and velocity when against multichannel synthetic aperture radar ground moving target indication (SAR-GMTI) system, as well as significant computational burden in generating dense false targets. Meanwhile, current false blocking image generation methods struggle to create blocking images with controllable position and coverage shape, and the generated images will be partially canceled against multichannel SAR-GMTI. To tackle these issues, we propose a smart multitransmitter cooperative (MTC) false images generation method against multichannel SAR-GMTI and present an accurate and a fast implementation scheme of the method in this article. The accurate implementation scheme is referred to as the MTC frequency-shifting modulation jamming (MTC-FSMJ) method, which can generate false moving targets with controllable radial velocities and initial positions by utilizing multiple transmitters. However, due to the need for iteration calculations in generating a single false target, the computation load of the MTC-FSMJ method becomes substantial when generating dense false moving targets. When we want to generate dense false moving targets, a fast implementation scheme known as the MTC template-modulated jamming (MTC-TMJ) method provides an excellent alternative. This approach can quickly generate dense false moving targets within the template without iteration calculations. Moreover, by reasonably designing the template, the MTC-TMJ method can also generate false blocking images with controllable positions, while avoiding partial cancellation. Theoretical analysis and simulation experiments have verified the effectiveness of both implementation structures.