GPS carrier phase measurement method based on group-period phase comparison

被引:0
|
作者
Du, Baoqiang [1 ]
Liu, Dan [1 ]
Wang, Yanfeng [1 ]
Cao, Lingzhi [1 ]
Zhou, Wei [1 ,2 ]
机构
[1] School of Electric and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
[2] Institute of Information Processing, Xidian University, Xi'an 710071, China
来源
Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument | 2013年 / 34卷 / 05期
关键词
Group theory - Phase measurement;
D O I
暂无
中图分类号
学科分类号
摘要
GPS carrier phase measurement is a hot research spot in current international time-frequency measurement and transmission field. Aiming at the requirement of high-precision time transfer and precise navigation positioning, and the problems of difficult measurement and uncertain precision of high frequency in time and frequency measurement domain, a GPS carrier phase measurement method is proposed based on group period phase comparison. Using the stability characteristics of L1 and L2 bands, the high-resolution different frequency phase processing idea is introduced; and through analyzing the frequency or phase relations between two carrier signals, the group period phase comparison theory is applied in the GPS carrier phase measurement; and combining high-precision different frequency phase detection method, the precise distance measurement and accurate positioning between the satellite and earth are accomplished. Experimental results prove the rationality and scientificity of the method. Compared with traditional GPS carrier phase measurement method, the proposed method improves the calculation precision of whole cycle ambiguity, eliminates the error source of the mathematical model, reduces the cost, simplifies the circuit structure and improves the positioning accuracy. The method may provide the key theoretical guidance and technical support in phase processing and time synchronization for time-frequency transmission and navigation positioning and other high-tech fields, and has a broad application prospect.
引用
收藏
页码:1086 / 1092
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