Session P5: GNSS Systems Timing Architectures and Capabilities

Research on Satellite-Based and Ground-Based Differential Methods in Dual-Satellite Passive Positioning System Basing on time Difference of Arrival and Frequency Difference of Arrival
Yanrong Xue, National Time Service Centre,CAS
Location: Seaview A/B
Date/Time: Thursday, Jan. 30, 4:46 p.m.

In order to improve the positioning error of dual-satellite passive positioning system based on time difference of arrival and frequency difference of arrival?and further improve the positioning accuracy of the system, according to the error distribution law of dual-satellite passive positioning system, the methods of dual-satellite passive positioning ground-based and satellite-based differential technology are given the first time. The advantages and disadvantages of these two methods are analyzed, and the application scope of the two methods is researched. The conclusion indicates that after the error correction of dual-satellite passive location system by using these two differential technology, the positioning accuracy of the system can be improved greatly and widely, and the positioning accuracy can be improved to be better than 4km from 10~20km by using satellite-based differential technology especially.