A Multiple-Jammer Deceptive Jamming Method Based on Particle Swarm Optimization against Three-channel SAR GMTI

Traditional deceptive jamming methods effectively generate false targets against three-channel synthetic aperture radar ground moving target indication (SAR GMTI). However, effectiveness of traditional is limited to azimuth distance between two jammers. When the requirement not satisfied, amplitude coefficients will be too high used by To overcome this disadvantage, a novel multiple-jammer method proposed. The intercepted signal retransmitted and performed time-delay modulation. Then, first modeled as polynomial function where order equal number interferometric phase difference utilized an objective function, relocated position constraint reduce computational burden, optimal are estimated solving optimization problem based on particle swarm (PSO). Hereby, gain calculated with proposed lower than those when satisfied. By utilizing gain, generated detected displaced center antenna (DPCA) technique in desired along-track interferometry (ATI) technique. Experimental results verify method.