A homing guidance law against a high-speed target in the exoatmospheric area is proposed based on the vector field approach. The vector field is designed and utilized to achieve head-on hit-to-kill interception. The trajectory of the target is predicted using the gravity acceleration model. The vector-field-based guidance law makes the missile converge to the predicted trajectory of the target, and therefore, the missile can await the target by flying along the predicted trajectory. The shape of the vector field is designed with the consideration of the smooth convergence and finite-time convergence, and the corresponding bounding condition imposed by the lateral acceleration limit is derived. The feasible region for the parameters in the finite-time convergent vector field is analyzed, and the performance of the proposed guidance law is demonstrated using numerical simulations.

中文翻译：

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基于矢量场的大气层外目标拦截制导

提出了一种基于矢量场法的大气层外高速目标寻的制导律。矢量场的设计和利用是为了实现正面命中拦截。使用重力加速度模型预测目标的轨迹。基于矢量场的制导律使导弹收敛到目标的预测轨迹，因此导弹可以沿着预测轨迹飞行等待目标。设计矢量场的形状时考虑了平滑收敛和有限时间收敛，推导出了相应的横向加速度极限施加的边界条件。分析了有限时间收敛向量场中参数的可行域，