基于扰动大气模型的空基拦截器轨迹规划

Trajectory planning for an air-based interceptor using a perturbation atmosphere model

针对运行于地球低轨的威胁目标,提出了一种可用于空基拦截器的精确轨迹规划方法.考虑了大气密度与风场的系统性扰动,建立了有限推力拦截器最优控制问题动力学模型,并用直接配置法与序列二次规划法(sequential quadratic programming,SQP)进行了数值求解,得到了更加精确的拦截轨迹.最后用算例证明了方法的有效性.

Aiming at enemy targets in low earth orbit, a more accurate trajectory planning method used for air-based interceptors was put forward. Considering the system perturbation of the atmosphere＇ s density and wind field, the optimal control model of a finite-thrust interceptor was derived. This model was resolved by the direct collocation method and SQP, which led to a more accurate trajectory of the interceptor. Results of a simulation study show the effectiveness of this proposed trajectory planning methed.