基于C-W制导的瞄准点修正技术

C-W Guidance-Based Aiming Point Correction Technique

在分析C-W冲量制导误差源的基础上,指出主要摄动为C-W方程的线性化误差,相对J2项摄动误差和发动机的冲量假设误差.在求解得到主要摄动作用下相对运动方程解析解的基础上,提出了瞄准点修正技术,在计算量增加不大的前提下,不仅提高了C-W制导精度,而且实际制导曲线趋近于最优交会轨迹,燃料消耗接近最优解.

Based on error analysis of the C-W guidance, the article shows that the main perturbation sources of C-W impulse guidance are linearization error, relative J2 term perturbation, and impulse assumption error of thrusters . When obtaining the analytic solution of perturbed relative motion equation, an aiming point modification technique is induced to improve guidance accuracy at limited increase of computational effort, and the actual rendezvous trajectory and the fuel consumption are close to optimal ones.