预警机雷达下视探测性能仿真方法

Method for Detection Performance Simulation under Down Looking AEW Radar

监视雷达作用距离是表征预警机探测性能的重要指标。预警机和目标机在空间相对关系是不确定和时变的。由于预警机对目标机的观测数据随时间变化,给预警机有效作用距离的定义和计算增加了复杂度。针对预警机巡逻航迹和目标机突防入侵特点,讨论了预警机PD雷达最大作用距离方程,建立了适合于预警环境的改进的杂波谱模型,根据机目空间几何关系和改进的杂波谱模型,提出了监视雷达平均最大作用距离的计算方法,以及平均最大作用距离随预警机航迹方位向分布的仿真方法,给出了仿真步骤,进行了仿真计算,研究结果对计算和验证各类预警机监视雷达下视探测性能有一定参考、应用价值。

The detection range is an important performance index for Airborne Early Warning（AEW） systems.Because the space geometry between the AEW system and target planes is always uncertain and time-varying,the observation data also varies with time,which increases complexity of defining and calculating the effective detection range for the airborne surveillance radar.According to features of the patrolling track and invasion,the maximum detection range equation for surveillance radars is discussed,and the improved clutter spectrum model applied in the AEW environment is also presented.Furthermore the calculation method of the average maximum detection range and the corresponding simulation method of its distribution along the flight path are proposed.Simulation results prove that methods presented here can be adopted to all kinds of AEW radars and achieve better estimation of the effective detection range,which is much valuable for verifying the detection performance of down looking AEW radars.