Abstract:

As it is known, deception jamming methods are generally used in the jamming area. The trajectory parameters of circular synthetic aperture radar (SAR) are more difficult to obtain compared to those of common SAR in an ideal straight-line flight, thus it is inaccessible to finish deception jamming based on modulated jamming by using the conventional analytic expression. For that, a novel method for circular-SAR deception jamming based on multireceivers is proposed. By measuring the range differences between different receivers, the whole parameters could be detected instead of detecting each specific parameter of circular-SAR directly, then deception jamming is accomplished. The algorithm has the advantages of higher accuracy and powerful stability compared with the methods of detecting each specific parameter directly, and a satisfying jamming result can be also achieved in the case that the airplane exists motion errors. At the same time, the influence of system precision on deception jamming quality is analyzed. Finally, simulation results demonstrate the effectiveness and feasibility of the proposed method.