推导雷达方程，建模计算美国的预警机雷达对大型战斗机的最大发现距离。雷达建模包括天线方向图、扫描调制（天线方向图的扫描调制）等，同时考虑不同脉冲积累数(Derive the radar equations, model and calculate the maximum discovery distance of the US early warning aircraft radar for large fighters. Radar modeling includes antenna patte