ANALYSIS OF LONGTERM VARIATIONS OF GPS RECEIVERS’ DIFFERENTIAL CODE BIAS
Zhou Dongxu 1, 2) ; Yuan Yunbin 1) ; Li Zishen 1, 2) ; and Liu Xifeng 1)
1)Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Key Laboratory of Dynamic Geodesy, Wuhan 4300772)Graduate University of Chinese Academy of Sciences, Beijing 100049
Abstract：The longterm variations of a variety of GPS receivers’ DCB were analyzed based on the DCB published by the Center for Orbit Determination in Europe during 2001—2009. The results show that there are periodic behaviors in the timeseries of the change receivers’ DCB, among then the monthly and yearly periods are the most predominant. In addition, certain fluctuations underlying the longterm behaviors in GPS receivers’ DCB can also be found, and some of the GPS receivers may suffer the deterioration of DCB stability, or even somewhat deviation.
