This paper proposes integrated guidance and control for skid-to-turn cruciform canard-controlled interceptors for controlling impact time along with interception of non-maneuvering targets. This approach circumvents the possible difficulties associated with designing guidance and control subsystems independently. An interceptor control surface deflection for achieving appropriate lateral acceleration to achieve the guidance objectives are derived using sliding-mode control considering nonlinear engagement dynamics, thereby remaining effective even for engagement with large initial heading errors. The switching surface is chosen to be a function of time-to-go and its rate with different time-to-go estimates against stationary and moving targets. The time-to-go estimate for stationary target accounts for the heading angle errors, while that for constant velocity target provides an exact value. Unlike many of the existing strategies, the proposed approaches enable the interceptor to achieve an impact time, even less than its initial estimates. The efficacy of the proposed guidance strategies is validated through numerical simulations for various initial engagement geometries. Furthermore, the performance of the proposed integrated guidance and control approach is also compared with the separate design of guidance and control subsystems, and shown to be superior.

中文翻译：

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针对非机动目标的综合冲击时间制导和控制

本文提出了滑转十字鸭翼式拦截器的综合制导和控制方法，用于控制撞击时间和拦截非机动目标。这种方法避免了与独立设计制导和控制子系统相关的可能困难。用于实现适当横向加速度以实现制导目标的拦截器控制面偏转是使用考虑非线性交战动力学的滑模控制推导出来的，因此即使在初始航向误差较大的交战中也能保持有效。切换表面被选择为运行时间及其速率的函数，其中针对静止和移动目标进行不同的运行时间估计。静止目标的剩余时间估计解释了航向角误差，而对于等速目标，则提供了一个准确的值。与许多现有策略不同，所提出的方法使拦截器能够达到一个影响时间，甚至比它的初始估计还要短。通过对各种初始接合几何形状的数值模拟，验证了所提出的制导策略的有效性。此外，所提出的综合制导和控制方法的性能也与单独设计的制导和控制子系统进行了比较，并显示出优越性。通过对各种初始接合几何形状的数值模拟，验证了所提出的制导策略的有效性。此外，所提出的综合制导和控制方法的性能也与单独设计的制导和控制子系统进行了比较，并显示出优越性。通过对各种初始接合几何形状的数值模拟，验证了所提出的制导策略的有效性。此外，所提出的综合制导和控制方法的性能也与单独设计的制导和控制子系统进行了比较，并显示出优越性。