与RGPO转发时延相关的干扰功率补偿技术

Jamming Power Compensate Method Related to RGPO Retransmission Time Delay

针对基于数字射频存储(DRFM)技术的转发式距离波门拖引干扰在波门拖引起始阶段假目标功率随干扰信号时延变化,影响拖引效果的问题。以对线性调频信号(LFM)的距离波门拖引干扰为例,在对干扰信号时域输出进行数学近似的基础上,分析真实回波信号与干扰信号时域叠加输出与干扰信号转发时延之间的关系,并对干扰信号进行功率补偿。仿真分析证明:经过功率补偿后的转发干扰信号具有稳定的时域输出幅度,验证了理论分析的正确性与补偿方法的有效性。

The power of false target varies with the retransmission time delay of the jamming signal and has negative effect at the beginning phase of the Range Gate Pull Off（RGPO）jamming based Digital Radio Frequency Memory（DRFM）technology. In this paper,by taking Range Gate Pull Off jamming of linear frequency signal（LFM）as an example,the relation between the superimposed output of real echo signal and the jamming signal in time-domain and retransmitting time is analyzed based on the mathematical approximation of the time-domain output of the jamming signal and power compensation of jamming signal is made. Simulation shows that the power of the jamming signal after compensation has stable time-domain output amplitude,verifying the theoretical analysis of the correctness and effectiveness of compensation methods.