建立了雷达波束扫描与捕获问题的运动学模型和方程,通过计算得到一组密集的数据.对这组数据进行数值分析,得到飞机被捕获的最大捕获半径.采用正交多项式对这组数据进行拟合,得到一个光滑的拟合曲面,同时给出被捕获次数和时间随飞行状态变化趋势的近似解析表达式. The kinematic models and equations of radar beam scanning and acquisition are established, and a set of dense data is obtained by calculation. The maximum capture radius of the aircraft is obtained by numerical analysis of this set of data. This set of data is processed using orthogonal polynomials Fitting to get a smooth fitting surface, and at the same time give the approximate analytic expressions of the times and times of the captured changes with the flight state.