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Optimal trajectory tracking for missiles with Doppler Beam Sharpening radars

机译：多普勒波束锐化雷达对导弹的最优轨迹跟踪

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This paper investigates optimal trajectory tracking for missiles fitted with Doppler Beam Sharpening seekers, which are used to generate a radar image of the terrain. The guidance problem for this type of sensor is complex as constraints must be imposed on the flight path of the missile to ensure the seeker can obtain adequate crossrange resolution for target recognition and aimpoint selection. Terminal position and impact angle constraints are also imposed in the guidance problem. An open-loop skid-to-turn trajectory optimization problem is solved numerically and then used as an optimal trajectory to follow using closed-loop in-flight controls. This closed-loop guidance is based on linear quadratic regulation with a switchover to an impact angle guidance law. In this paper we also investigate the effectiveness of a preview term based on prediction of the future trajectory from the current state. Results with and without the preview term are presented for a test example.
机译：本文研究了装有多普勒波束锐化导引头的导弹的最佳轨迹跟踪，该导弹用于生成地形的雷达图像。这种类型的传感器的制导问题很复杂，因为必须对导弹的飞行路径施加限制，以确保搜寻器能够获得足够的跨程分辨率，以进行目标识别和瞄准点选择。终端位置和冲击角约束也施加在制导问题中。数值求解开环滑行转弯轨迹优化问题，然后将其用作跟随飞行中闭环控制的最优轨迹。该闭环引导基于线性二次调节，并转换为冲击角引导定律。在本文中，我们还将根据当前状态对未来轨迹的预测来研究预览词的有效性。给出了带有和不带有预览术语的结果，作为一个测试示例。

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