基于载波相位的接收机群时延测量技术

doi:10.12305/j.issn.1001-506X.2022.04.02

系统工程与电子技术 ›› 2022, Vol. 44 ›› Issue (4): 1078-1084.doi: 10.12305/j.issn.1001-506X.2022.04.02

基于载波相位的接收机群时延测量技术

王峰毅, 肖志斌, 李蓬蓬, 张可, 倪少杰*

国防科技大学电子科学学院, 湖南长沙 410073

收稿日期:2021-04-02 出版日期:2022-04-01 发布日期:2022-04-01
通讯作者: 倪少杰
作者简介:王峰毅(1998—), 男, 硕士研究生, 主要研究方向为星基导航与定位技术|肖志斌(1986—), 男, 讲师, 博士, 主要研究方向为星基导航与定位技术|李蓬蓬(1985—), 男, 讲师, 博士, 主要研究方向为星基导航与定位技术|张可(1987—), 男, 副研究员, 博士, 主要研究方向为星基导航与定位技术|倪少杰(1978—), 男, 研究员, 博士, 主要研究方向为星基导航与定位技术
基金资助:
国家自然科学基金(U20A0193);国家自然科学基金(U20A0193)

Receiver group delay measurement technology based on carrier phase

Fengyi WANG, Zhibin XIAO, Pengpeng LI, Ke ZHANG, Shaojie NI*

College of Electronic Science and Technology, National University of Defense Science and Technology, Changsha 410073, China

Received:2021-04-02 Online:2022-04-01 Published:2022-04-01
Contact: Shaojie NI

摘要/Abstract

摘要：

针对传统群时延测量方法无法达到皮秒级测量精度要求的问题, 提出一种基于载波相位的接收机群时延测量技术。该方法在通道群时延特性为分段抛物线假设的前提下, 利用窄带扩频信号的载波相位观测量对分段抛物线系数进行搜索固定, 通过抛物线函数固定整周模糊度, 结合载波相位反映各频点的群时延。仿真结果表明, 该测量技术可以精确固定整周模糊度, 群时延测量结果可达皮秒量级, 对高精度导航接收机群时延特性具有良好的测量效果。

关键词: 群时延测量, 窄带扩频信号, 整周模糊度, 载波相位

Abstract:

Aiming at the problem that the traditional group delay measurement method cannot meet the picosecond measurement accuracy requirements, a receiver group delay measurement technology based on carrier phase is proposed. Under the assumption that the delay characteristics of the channel group are piecewise parabola, this method uses the carrier phase view measurement of the narrow-band spread spectrum signal to search and fix the piecewise coefficient, and fix the integer ambiguity through the fixed parabola coefficient to reflect the group delay of each point with the carrier phase. The simulation shows that the measurement technology can accurately fix the integer ambiguity, and the group delay measurement results can reach the picosecond requirements, which has good measurement effect on the group delay of high precision navigation receivers.

Key words: group delay measurement, narrow-band spread spectrum signal, integer ambiguity, carrier phase

中图分类号:

TN98

王峰毅, 肖志斌, 李蓬蓬, 张可, 倪少杰. 基于载波相位的接收机群时延测量技术[J]. 系统工程与电子技术, 2022, 44(4): 1078-1084.

Fengyi WANG, Zhibin XIAO, Pengpeng LI, Ke ZHANG, Shaojie NI. Receiver group delay measurement technology based on carrier phase[J]. Systems Engineering and Electronics, 2022, 44(4): 1078-1084.

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基于载波相位的接收机群时延测量技术

Receiver group delay measurement technology based on carrier phase

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