摘要
卫星导航系统码间硬件延迟偏差是电离层解算的主要误差来源,在高精度定位时,码偏差需要加以计算和消除.本文提出了通过北斗单星三频无电离层组合、线性回归假设及载波硬件延迟模型进行估算北斗接收机载波相位码偏差的方法,直接计算接收机的码偏差.通过采用实测的北斗单星三频载波数据,验证了该方法对于码偏差大于1μs时是有效性的.此方法提高了北斗二代测试期间数据质量分析水平,增强了北斗接收机软硬件的开发测试能力.
Difference Code Bias（DCB） of satellite navigation system is the main error of ionospheric delay estimation,so DCB must be calculated and eliminated.In this paper,a new method is presented to estimate receiver carrier DCB through BeiDou single satellite triplefrequency ionosphere-free combination,linear regression assumptions and model of hardware delay.The method proves its effectiveness by using single Beidou satellite triple-frequency carrier raw data when combination DCB of receiver exceeds microsecond.The method improves the analytical level of BeiDou data,and enhances capabilities of testing BeiDou receiver＇s hardware and software.
出处
《北京交通大学学报》
CAS
CSCD
北大核心
2012年第2期35-39,共5页
JOURNAL OF BEIJING JIAOTONG UNIVERSITY
基金
国家自然科学基金资助项目(60736047)
关键词
北斗二代
三频载波
码偏差
接收机钟差
BeiDou
triple-frequency carrier
DCB
receiver clock error
