中轨道导航卫星废弃轨道优化设计

Optimization Design of Disposal Orbit for Medium Earth Orbit Navigation Satellite

为了减缓中轨道区域空间目标的增长,确保导航卫星在轨安全运行,本文以北斗二号卫星为研究对象,确定卫星废弃轨道选取带范围,以偏心率增量最小和推进剂消耗最小为优化目标,采用遗传算法分别对抬升轨道和下推轨道进行优化,得到最优的坟墓轨道初始参数。发现最优废弃轨道在200年内的稳定性满足要求;同时,抬升处置的最优轨道偏心率的变化量略大于下推处置,但抬升处置的安全距离更大。

In order to slow the growth of spacecrafts in the medium earth orbit region and ensure the safe operation of the navigation satellites in orbit,the Beidou2 satellite is taken as the research object and the range of the selected orbits of the disposal orbits is determined.The optimization goal is to minimize the eccentricity increment and the minimum propellant consumption and optimize the uplift and pushdown orbits by using genetic algorithm to obtain the optimal initial parameters of the grave orbit.It shows that the stability of the optimal disposal orbit meets the requirements within 200 years.At the same time,the variation of the optimal orbital eccentricity of the lifting treatment is slightly larger than that of the pushdown treatment,but the safe distance of the lifting treatment is greater.