ABSTRACT
With the development of space technology, the precision of orbit determination for low earth orbit (LEO) satellites has been continuously improved. The orbit determination at hundred-meter level of precision in the 1960 s, which was enhanced to meter level in the 1970 s and decimeter level in the 1980 s, has currently reached the precision of a centimeter level. The evolution of tracking and measurement techniques provides a solid foundation for the improvement of precision in orbit determination of satellites. Nowadays, tools commonly used for tracking orbits of satellites in the world include global positioning system (GPS), satellite laser ranging system (SLR), Doppler orbitography and radiopositioning integrated by satellite (DORIS), etc.
