亚洲一号卫星共视法定轨及时刻同步

Orbit Determination and Time Synchronization Via Common-View to ASIA-1 Satellite

１９９３年中国科学院同步卫星观测网同步接收亚洲一号卫星的电视信号，进行了多台站时差法定轨及共视法时刻同步试验。试验表明：时差法定轨在经度、纬度方向精度较高，在卫星高度方向误差较大。不进行卫星位置修正时，时刻同步误差小于３μｓ；进行卫星位置修正时的时刻同步误差小于０．９μｓ，可应用于局部或大范围网络时刻同步及同步卫星轨道研究。

The TV signals transmitted by ASIA-1 Satellite were received by the satellites observation network of CAS for satellite orbit determination and time synchronization in 1993.The results of experiment show that the precisions of orbit determination are fairly good in both the directions of latitude and longitude, but the precision is not good in the direction of altitude.The error of time synchronization is less than 3μs without correcting the satellite position and it is less than 0.9μs after correcting the position of the satellite.