This paper aims to propose a new guidance algorithm for intercepting a high-speed maneuvering target, such as a tactical ballistic missile that flies in a quasi-ballistic trajectory. The motivation of this study lies in the fact that the classical proportional navigation guidance (PNG) undergoes the performance degradation under the above engagement scenario due to its intrinsic property. To deal with the issue, an accurate collision course that reflects the motion characteristics of the ballistic target and missile is first analyzed. The desired look angle that leads to achieving the accurate collision course is then determined with the help of a novel time-to-go calculation method. Finally, the proposed guidance law providing the desired look angle is obtained by leveraging the concept of the biased PNG. Since the proposed method is designed to achieve an accurate collision course, it does not lead to unnecessary maneuvering near the target under the engagement scenario. This property is desirable for reserving the operational margin of maneuverability for reacting to unexpected situations during the engagement. It could improve the capturability of the target. Finally, the performance of the proposed method is verified through numerical simulations in a way to compare with the existing methods such as PNG and the augmented PNG (APNG).Author details: Kindly check and confirm whether the corresponding author is correctly identified.The corresponding author is correctly identified.Please check and confirm that the authors and their respective affiliations have been correctly identified and amend if necessary. First, Third, Fourth author's affiliations are the same. Affiliation 1 and Affiliation 3 are the same, thus Affiliation 3 is unnecessary. Chang-Hun Lee^{3} should be replaced with Chang-Hun Lee^{1}.

中文翻译：

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一种针对高速机动目标的新制导算法

本文旨在提出一种新的制导算法，用于拦截高速机动目标，例如以准弹道轨迹飞行的战术弹道导弹。本研究的动机在于经典比例导航引导 (PNG) 由于其内在属性而在上述参与场景下性能下降。为了解决这个问题，首先分析了反映弹道目标和导弹运动特性的精确碰撞过程。然后借助新颖的剩余时间计算方法确定导致实现准确碰撞路线的所需视角。最后，通过利用偏置 PNG 的概念，获得了提供所需视角的建议制导法则。由于所提出的方法旨在实现准确的碰撞路线，因此在交战情况下不会导致靠近目标的不必要的机动。这种特性对于保留可操作性的操作裕度以在交战期间对意外情况作出反应是可取的。它可以提高目标的捕获能力。最后，通过数值模拟验证了所提出方法的性能，并与现有方法如PNG和增强PNG（APNG）进行了比较。 作者详情：请检查并确认是否正确识别了相应的作者。相应的作者被正确识别。请检查并确认作者及其各自的隶属关系已被正确识别并在必要时进行修改。第一、三、四作者 s 隶属关系相同。隶属关系 1 和隶属关系 3 相同，因此无需隶属关系 3。Chang-Hun Lee^{3} 应替换为 Chang-Hun Lee^{1}。