The Global Positioning System (GPS) will play the important role in relative position and attitude determination for satellites formation flying However, in deep space, GPS may not be sufficient to reliably determine the relative position and attitude of formation flying In this paper, determination of the relative states of formation satellites using onboard augment GPS was investigated.

A study of orbit determination methods using undifferenced dual-frequency onboard GPS P codes;

Study and Software Implementation of GPS Data Pre-processing and Onboard GPS Kinematic Orbit Determination;

Based on the geometric, dynamic and reduced dynamic precise orbit determination (POD), a kinematic POD by the onboard GPS zero-differential phase observations was discussed and programmed.

On the basis of the theory of on-board GPS precise orbit determination (POD), having analyzed and discussed functional model and stochastic model of on-board GPS low earth orbit (LEO) satellite, the linear combination, zero-differential and differential functional model form and their advantages and disadvantages are put forward.

The on-board GPS technique is becoming a main method for Low Earth satellites orbit determination.

In the course of satellite-borne GPS carrier phase measurement,cycle-slip detection and repair plays a very important role in the GPS station precision.