Application of the Pure Geometric Method of GPS for Orientating Orbit of the Low-orbit Satellite

If a GPS receiver is put on a low orbit satellite, we can use its observed value to calculate the coordinates of low orbit satellite as long as four or more GPS satellites can be observed.Howerer,as GPS satellite is designed for those users who are on the earth,and the low orbit satellite is highly dynamic and high-speed,sometimes less than four satellites could be observed.This paper took a test to apply pure geometric method of GPS to position the low orbit satellite.The precision of this method was also presented.