对机载箔条弹的干扰效果及评估指标进行了研究。首先对投放箔条弹后箔条弹和飞机的运动特性进行了建模和仿真,然后就机载箔条弹对防空导弹制导雷达角度测量和目标跟踪的干扰效果进行了分析,得到了角度测量值的统计分布,对跟踪时新息统计特性变化以及导致的错误关联进行了分析。基于干扰效果分析,提出以跟踪误差、跟踪连续性、信干比等指标来评估干扰效果。

Chaff bomb's interference effect and evaluation index to air-defense missiles are studied. The kinematic characteristics of chaff bomb and plane after launching chaff bomb are modeled and simulated. The air denfense missiles common are guided by radar. The interference effect on angle measurement and target tracking of guide radar is analyzed. The statistic distribution of angle measurement value is derived. The statisics of innovation will change, which results in that radar may make the wrong associantion. Based on the interference effect analysis, it is suggested that track error, track continuance, signal to interference ratio and etc, can be used as the evaluation indexs. The research result is of important meaning to increasing the simulation, test and evalution capality of air defense missile.