考虑风险与输入约束的多移动防御者安全拦截制导律
Risk-Aware Input-Constrained Safe Intercept Guidance Against Multiple Moving Defenders
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- The University of Texas at San Antonio（圣安东尼奥德克萨斯大学）
- University of Cincinnati（辛辛那提大学）
- Air Force Research Laboratory（空军研究实验室）
机构由 AI 辅助整理，请以论文原文为准。
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中文总结 AI 辅助
本文提出一种考虑风险与输入约束的制导律，使攻击者能在多个移动防御者威胁下安全拦截固定目标，通过动态机动提示量化风险并限制横向加速度，实现风险与性能的平衡。
中文摘要 AI 辅助
本文针对存在多个移动防御者且需遵守控制输入限制的情况下，为攻击者拦截固定目标开发了一种考虑风险的制导律。我们通过交战区（EZs）（攻击者拦截可行的状态空间区域）来表示防御者威胁，并采用动态机动提示（DMC）（退出交战区所需的最小航向修正）作为几何风险的确定性度量。安全性通过预设的DMC界限来强制实现，从而在指定的风险容忍度下实现受控的交战区穿透。对于多个防御者，相应的安全约束通过平滑最小值聚合进行组合。所提出的制导策略在交战安全时驱动攻击者朝向目标，并在接近预设安全边界时过渡到规避机动。由此产生的在线无优化制导律直接限制所施加的横向加速度，并在需要纠正动作之前启动有界的前摄机动。闭环分析确立了在逐点有界输入可行性下预设风险约束的保持，以及在持续目标可达性条件下有限时间目标拦截的保证。数值研究验证了所提出的策略，并说明了允许的几何风险与拦截性能之间的权衡。
英文摘要
This paper develops a risk-aware guidance law for an attacker to intercept a stationary target in the presence of multiple moving defenders while respecting the control input limits. We represent defender threats via engagement zones (EZs) (regions of state-space from which attacker interception is feasible) and employ the dynamic maneuvering cue (DMC) (minimum heading correction to exit EZs) as a deterministic measure of geometric risk. Safety is enforced through a prescribed bound on the DMC to enable controlled EZ penetration subject to a specified risk tolerance. For multiple defenders, the corresponding safety constraints are combined through a smooth-minimum aggregation. The proposed guidance strategy drives the attacker toward the target when the engagement remains safe and transitions to an avoidance maneuver as the prescribed safety boundary is approached. The resulting online optimization-free guidance law directly bounds the applied lateral acceleration and initiates a bounded preemptive maneuver before corrective action is required. Closed-loop analysis establishes preservation of the prescribed risk constraints under pointwise bounded-input feasibility and finite-time target interception under a sustained target-accessibility condition. Numerical studies validate the proposed strategy and illustrate the tradeoff between allowable geometric risk and interception performance.
