为定量分析和评估机载红外搜索跟踪系统（IRST）牵引探测模式对雷达探测效能的影响，以雷达探测效能概率作为评估指标，模拟IRST牵引雷达探测的过程，建立基于多波位搜索的牵引成功概率模型，确定满足一定牵引成功概率下的雷达搜索范围，并根据特定的目标特性推导雷达探测效能概率表达式。仿真结果表明，该模式利用红外的高精度角度信息进行牵引，极大缩小了雷达的搜索区域和搜索时间，加快雷达对目标的截获过程，并利用波束驻留时间的增加提高了雷达的发现概率，提升了雷达的探测效能。

For the purpose of quantitative analysis and evaluating the pattern's influence to the radar's detection efficiency, the efficiency probability of detecting targets for the radar is regarded as an evaluating guide line. Through simulating the process of IRST towing the radar for detection, a mathematic model for the successful towing probability based on multi-eam position searching is set up, so searching areas of the radar can be made sure under the condition of the specifically successful towing probability, as well as the expression for efficiency probability of radar's detection is acquired from characteristic of targets. The simulation result indicates that the pattern can hugely reduce the searching areas and time of the radar, and play down time of capturing targets, then detective probability and detective efficiency of the radar can be improved by using the increase of beam residence time.

TN959

国家级航空科学基金资助项目