考虑J_2摄动作用的异面椭圆轨道双冲量交会轨道修正方法

重点研究了地球扁率J2摄动作用对固定时间双冲量异面椭圆轨道交会运动的影响以及相应的轨道修正方法.根据摄动理论,利用Eneke法计算了J2摄动作用引起的实际飞行轨迹与理论标称轨迹之间的位置偏差.在此基础上,提出了通过修正预定的交会位置来修正转移轨道偏差的控制方法.通过仿真计算,对修正前后的位置偏差进行了仿真分析,结果表明,文中提出的轨道修正方法能够有效地减小摄动作用引起的制导误差,且方法简洁、易于实现.

Orbit Correction Method for Two-Impulse Rendezvous Between Non-coplanar Elliptic Orbits Considering the J2 Perturbation

The influence of the earth oblateneas J2 perturbation on the time-fixed two-impulse rendezvous between non-coplanat elliptic orbits was investigated, and the conrresponding orbit correction method was mainly studied. Based on the perturbation theory, the position error between the perturbed and unperturbed transfer orbits due to the J2 perturbation was obtained through Encke' s method, and then the control strategy by means of correcting the predictive arrival point was put forward to realize the correction of the transfer orbit. A lot of simulations were done to compare the position error before and after the correction, and the simulation results indicate that this method, which is simple and easy to be realized, is efficient to provide a significant increase in accuracy of rendezvous with the effect of J2 perturbation included.