在高科技局部战争中，隐身飞机是防空雷达面临的“四大威胁”之一。雷达组网是实现反隐身的一种有效技术。以隐身飞机F-117A为对象，提出了隐身飞机姿态角的概念，根据姿态角得到计算雷达探测概率所需要的雷达截面积；提出了雷达网综合发现概率的概念和以“高度分层，平面分格”的描述方法，建立了雷达网综合发现概率数学模型，依此从雷达网发现隐身飞机的能力方面对雷达网反隐身的能力予以评估；在此基础上编制出性能评估软件，可为雷达网反隐身的实际应用和评估提供一定参考；经过运行分析发现在由3部分米波雷达和2部米波组成的雷达网的综合发现概率较单部雷达的发现概率平均提高约5％～20％。

In modern hi-tech warfare,stealth aircraft poses one of the "four major dangers" to radar.Radar network is an effective way to countercheck stealth aircraft.In this paper,American F-117 stealth fighter is studied and the concept of attitude angle of stealth craft is presented.According to the attitude angle of stealth aircraft,the radar cross section required by the calculation of radar detection probability can be obtained.The concept of radar network synthetic finding probability and the descriptive method of "altitude layer separation" and "plane grid separation" are put forward.The mathematical model of synthetic detection probability of radar network is established,according to which,the evaluation of radar network counter-stealth ability is done.Based on this work,the performance evaluation software is developed,which can be used as a reference in the practice and evaluation of radar network counter-stealth operation.When analysis of its operation is done,the following result is shown:the detection probability of a radar network with three decimeter-wave radars and two meter-wave radars is raised 5 to 20% than that of the single radar set.

TN957.52