SAR成像导引头的弹道设计与优化

弹载合成孔径雷达(synthetic aperture radar, SAR)的方位成像能力受飞行弹道和观测视角的影响。为满足SAR成像导引头在限定时间内获得最佳方位分辨率，提出了一种基于遗传算法的弹道优化设计方法。首先建立了弹载SAR条件下导弹飞行的约束，然后以导弹指令加速度为优化变量，构造了与方位分辨率和波束驻留时间相关的目标函数，采用遗传算法进行寻优，设计得到了弹载SAR平台的优化弹道。仿真实验证明了该方法的有效性。

Trajectory design and optimization for a SAR seeker

For a synthetic aperture radar(SAR) seeker,the trajectory and the look angle have an effect on the azimuth resolution of imaging.In order to acquire the best azimuth resolution within a fixed time,a trajectory design and optimization method is proposed based on genetic algorithms.The constraints of the missile flying with SAR at the flight time are built,and the missile command acceleration is used as control variables to set up the objective function about the dwell time and the desired azimuth resolution....