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研究了同时具有终端角度(攻击角度)和终端时间(攻击时间)约束的制导问题。通过将非线性运动学制导模型中的自变量由导引时间变换为速度方向角,可以利用最小值原理直接推导出一种闭环形式制导律,而不必引入任何的线性化处理。在该制导律的导引下,导弹能够精确击中目标并且精确满足终端时间和角度的约束。为了研究该制导律的可行性,本文定义并分析了若干重要参数的可行域。该闭环制导律及其可行性分析被应用于多弹齐射攻击的两种情况。数字仿真结果验证了所提出方法的有效性。
The problem of guidance with both terminal angle (attack angle) and terminal time (attack time) constraints is studied. By transforming the independent variables in the nonlinear kinematic guidance model from the guidance time to the speed direction angle, a closed-loop guidance law can be derived directly from the principle of minimum value without introducing any linearization. Guided by the guidance law, missiles can accurately hit the target and precisely meet the constraints of the terminal time and angle. In order to study the feasibility of the guidance law, this paper defines and analyzes the feasible region of several important parameters. The closed-loop guidance law and its feasibility analysis have been applied to both cases of multi-bomb salvo attack. The numerical simulation results verify the effectiveness of the proposed method.