GPS接收机仪器偏差的长期变化特性分析

摘要

基于欧洲定轨中心2001-2009年发布的部分IGS测站接收机仪器偏差估值,分析了不同类型接收机DCB的长期变化特性.结果表明:各类接收机DCB的长期时变特征均具备一定的周期性,其中以月和年周期最为明显;接收机DCB的长期变化中还存在一定的波动,部分接收机DCB的稳定性随时间积累逐渐变差,甚至存在偏移.%The long-term 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 time-series of the change receivers' DCB, among then the monthly and yearly periods are the most predominant. In addition, certain fluctuations underlying the long-term 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.