机载预警雷达最小可检测速度试飞方法

最小可检测速度是机载预警雷达的一项重要战术指标，直接影响雷达低速目标检测和跟踪，应尽可能采用实际飞行试验方式进行检验。针对机载预警雷达最小可检测速度试飞问题，本文首先分析了雷达杂波频谱，进而明确了主杂波谱宽对速度盲区和最小可检测速度的影响关系。在此基础上，开展了最小可检测速度试飞航线设计，提出了平行航线和垂直航线两种方案，配试飞机与预警机分别按相互平行和垂直航线进行飞行，使得目标能够穿越雷达速度盲区，从而检验出雷达最小可检测速度。最后，给出了相关的仿真实验结果。

Flight Test Method of Minimum Detectable Velocity for Airborne Early Warning Radar

Minimum detectable velocity (MDV) is an important tactical indicator for airborne early warning radar. MDV directly affects radar target detecting and tracking, so it should be validated in actual radar flight test. To solve this problem, MDV flight test method is studied in this paper. Firstly, radar clutter spectrum is analyzed. Then, the relationship of mainlobe clutter spectrum width, velocity blind zone, and MDV is analyzed. On this basis, the flight path of MDV test is designed. Two flight test plans are proposed, in which the flight paths of cooperative aircraft and early warning aircraft are parallel and perpendicular to each other respectively. Along the designed flight paths, the cooperative aircraft can fly through radar velocity blind zone and MDV will be obtained. Finally, computer simulation results are demonstrated.