初始轨道确定
Initial orbit determination
轨道确定与精度分析
orbit determination and precision analysis
简化动力法轨道确定
reduced-dynamic Orbit determination
卫星轨道确定
Satellite orbit determination
相对轨道确定
relative orbit determination
自主轨道确定
orbit determination
autonomous orbit determination
赤道轨道卫星
satellite equatorial orbit
接近同步赤道轨道
near synchronous equatorial orbit
近同步赤道轨道
near synchronous equatorial
orbit
双轨轨道回路
double rail track circuit