在分析线性调频信号模糊函数的基础上,指出利用频谱搬移达到产生虚假目标原理的可行性,并量化了频率偏移量和距离变化量之间的关系。采用二维移频的方法在特定位置产生虚假目标图像。针对产生虚假图像时虚假目标点多、运算量大的缺点,将二维移频进行了改进,使其更有效、高速的产生虚假目标图像。利用仿真实验验证了理论的正确性。%After analysis of the ambiguous function of LFM,the paper points out the feasibility to produce fake targets by shift-frequency,and measures the relationship between frequency offset and range offset.The paper also analyses the theory to make deceptive image jamming by 2-D shift-frequency.Aiming at the problem that deceptive image is constituted by many points and wasted much time to produce,the paper improves the algorithm to be more efficient and faster.The correction of the method is proved by the simulations.
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