多假目标干扰对雷达目标跟踪性能影响分析

Impact Analysis of Multi-False-Target Jamming on Radar Target Tracking Efficiency

为合理评价多假目标干扰效果,提出了结合雷达目标跟踪性能的分析方法。首先研究了多假目标产生机理,通过间歇采样正弦加权调频转发实现了多假目标干扰;假目标通过雷达信号检测以后,从包含多假目标点迹的信息中选取观测量,进而设计了目标跟踪算法进行航迹拟合与预测;通过蒙特卡罗仿真分析了雷达受扰前后目标航迹连续性损伤率和均方根误差变化,并将其作为评价指标分析了多假目标干扰效果。仿真结果表明,多假目标干扰会造成目标跟踪性能下降,合理设置干扰条件才能增强干扰效果。

In the purpose of evaluating the jamming effect of multi-false-target jamming,a method combined with radar＇s target tracking efficiency is put forward. The approach to generate multi-false-target is studied and multi-false-target jamming is achieved by combining intermittent-sampling repeater and sinusoidal weighted frequency modulation. After false targets are accepted by radar signal detection system,the proper measurement data when real target is surrounded by a large range of false targets are selected. A target tracking algorithm is designed to fit and forecast the track. The damage rate of track continuity and root-mean-square error before and after jammed are analyzed by using Monte-Carlo simulation,which depict how multi-false-target jamming impacts on target tracking. Simulation results show that multi-false-target jamming may damage radar target tracking efficiency; the jamming effect can be enhanced by reasonable setting of jamming conditions.