Optimal trajectory tracking for missiles with Doppler Beam Sharpening radars
Optimal trajectory tracking for missiles with Doppler Beam Sharpening radars
复制标题
使用多普勒波束锐化雷达对导弹进行最佳轨迹跟踪
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
D. Limebeer
中科院分区：
文献类型：
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作者：
A. Farooq;D. Limebeer
本文研究了装有多普勒波束锐化导引头的导弹的最优弹道跟踪，该导引头用于生成地形的雷达图像。这种类型的传感器的制导问题是复杂的，因为必须对导弹的飞行路径施加约束，以确保导引头能够获得足够的横向分辨率，用于目标识别和瞄准点选择。在制导问题中还引入了末端位置和碰撞角约束。开环打滑转弯轨迹优化问题的数值求解，然后作为一个最佳轨迹使用闭环飞行控制。这种闭环制导律是基于线性二次型调节的，对着角制导律具有很好的适应性。在本文中，我们还研究了有效性的预测项的基础上预测未来的轨迹从当前的状态。有和没有预览项的结果是一个测试示例。
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.