论文部分内容阅读
针对非合作目标难以开展动态测量的问题,根据空气动力学原理提出了一种非合作目标动态雷达散射截面(RCS)仿真方法。该方法首先建立测量背景下典型飞行航路模型,然后计算雷达视线在机体坐标系上的时变姿态角。根据姿态角开展电磁计算,获得F-117A隐身攻击机在侧站平飞、背站拉起、对站俯冲、侧站盘旋4种航路下的动态RCS数据。着重分析了动、静态RCS特性在起伏目标检测性能评估上的差异。结果表明:静态RCS特性难以反映目标运动时真实的雷达特性,利用静态数据描述目标特性可能导致错误结论,而文中方法获取的动态RCS数据可以提高结论的完整性和可信度。
According to the principle of aerodynamics, a non-cooperative target dynamic radar cross section (RCS) simulation method is proposed to solve the problem that it is difficult to carry out dynamic measurement. The method first establishes a typical flight path model under the measurement background and then calculates the time-varying attitude angles of the radar line of sight in the body coordinate system. According to the attitude angle, the electromagnetic calculation was carried out to obtain the dynamic RCS data of F-117A stealth attack aircraft under the condition of four side-by-side fly-by, back-station pull-up, Focus on the analysis of dynamic and static characteristics of RCS undulation target detection performance differences. The results show that the static characteristics of RCS are difficult to reflect the real radar characteristics when the target is moving. Using the static data to describe the target characteristics may lead to wrong conclusions. The dynamic RCS data obtained in this paper can improve the integrity and credibility of the conclusion.