北斗系统空间段由若干地球静止轨道卫星、倾斜地球同步轨道卫星和中圆地球轨道卫星三种轨道卫星组成混合导航星座。<br/> Beidou system space segment consists of several geostationary orbit satellites, inclined geosynchronous orbit satellites and medium earth orbit satellites.