摘要
在给定Compass系统中硬件延迟频问偏差参数定义的基础上，利用模拟的双频观测数据，对卫星的硬件延迟频间偏差参数TGD与接收机的硬件延迟频间偏差参数IFB的分离解算进行了分析，分别采用观测卫星TGD和为零与标定接收机IFB初值的约束条件进行求解。试验结果表明，不考虑电离层模型误差，观测卫星TGD和为零的约束条件，TGD1解算均方差为1．821ns，TGD2解算均方差为0．827ns；标定接收机的约束条件，TGD1解算均方差为1．371ns，TGD2解算均方差为0．608ns。
The definition of hardware - induced timing bias inter - frequency parameters for Compass system is analyzed and deduced in this paper. Using simulated dual- frequency observation data, the process of separating TGD parameter of satellite from IFB parameter of receiver is analyzed, adopting the restriction of calibrating special reoeiverg 1FB and the restriction that the sum of observational satellite TGD is equal to zero separately. Without ionosphere model error, the experiment results indicate that with the restriction of calibrating receiver＇s IFB, the RMS of TGD1 is 1. 371ns and the RMS of TGD2 is 0.608 ns. While with the restriction that the sum of observational satellite TGD is equal to zero, the RMS of TGDI is 1. 821ns and the RMS of TGD2 is 0. 827ns.
出处
《测绘科学与工程》
2010年第3期28-32,共5页
Geomatics Science and Engineering
关键词
硬件延迟
频问偏差参数
TGD
IFB
hardware -induced timing bias
inter -frequency parameter
timing group delay
inter frequency bias
