基于多接收机的圆周SAR欺骗干扰方法

Circular-SAR deception jamming based on multi-receivers

欺骗干扰是一种常用的干扰手段,相对于常规理想直线航迹的合成孔径雷达(synthetic aperture radar,SAR)而言,圆周SAR的航迹参数难以获取,用常规解析表达求解并进行干扰调制的欺骗干扰方法行不通,鉴于此,本文提出了一种基于多接收机的圆周SAR欺骗干扰方法。该方法不需要侦察圆周SAR的具体参数信息,直接从多接收机的斜距差中求解敌方SAR系统的参数整体,进而进行干扰调制。相比于直接测量各项SAR参数,该算法具有更高的测量精度和较强的算法稳定性,在载机存在运动误差的情况下,系统仍然可给出满意的干扰效果。本文同时分析了SAR系统精度对欺骗干扰质量的影响。最后,仿真实验验证了所提方法的有效性和可行性。

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.