摘要
给出了利用精密单点定位(PPP)技术估计GPS卫星P1-C1码偏差的数学模型,并以BRUS、GODE、SHAO和NIST四个跟踪站2010年10月份一个月的观测数据为例,采用PPP方法计算了所有GPS卫星的P1-C1码偏差,并与欧洲定轨中心提供的P1-C1码偏差进行了比较,结果表明:四个站估计的P1-C1码偏差精度均可达到几个厘米。一个月的计算结果表明:卫星的P1-C1码偏差在一个月内变化平缓。
Mathematical model of GPS P1-C1 DCB（Differential Code Bias） values estimated with PPP technology is introduced in this paper. Taking four tracking stations of BRUS, GODE, SHAO and NIST for example, with the observation data of October, 2010, P1-C1 DCB of all GPS satellites are calculated. Compared to P1-C1 DCB products provided by CODE, results show that accuracy of estimated P1-C1 DCB is around several cm. In addition, according to the results, P1-C1 DCB changes slowly within a month.
出处
《全球定位系统》
2011年第2期1-5,共5页
Gnss World of China
基金
国家自然科学基金项目(40874017和41074024)
