基于扩频码时移位置调制的卫星导航信号设计

doi:10.11959/j.issn.1000-436x.2020072

通信学报 ›› 2020, Vol. 41 ›› Issue (4): 54-61.doi: 10.11959/j.issn.1000-436x.2020072

基于扩频码时移位置调制的卫星导航信号设计

康家方¹,王红星^1,²,刘锡国^1,²,钟佩琳²,李笔锋³

¹ 海军航空大学航空通信教研室，山东烟台 264001
² 海军航空大学信号与信息处理山东省重点实验室，山东烟台 264001
³ 海军工程大学兵器工程学院，湖北武汉 430033

修回日期:2020-01-09 出版日期:2020-04-25 发布日期:2020-04-30
作者简介:康家方（1987- ），男，河南泌阳人，博士，海军航空大学讲师，主要研究方向为卫星导航信号设计、多载波调制技术、扩频通信等|王红星（1962- ），男，河南商丘人，博士，海军航空大学教授、博士生导师，主要研究方向为无线通信、非正弦波通信、无线光通信等|刘锡国（1981- ），男，山东烟台人，博士，海军航空大学副教授，主要研究方向为卫星通信与导航、无线激光通信|钟佩琳（1984- ），女，山东烟台人，博士，海军航空大学讲师，主要研究方向为无线通信、非正弦波通信|李笔锋（1983- ），男，湖北襄阳人，博士，海军工程大学讲师，主要研究方向为无线激光通信、卫星导航
基金资助:
国家自然科学基金资助项目(61701518)

Novel navigation signal design based on spreading code time shift position modulation

Jiafang KANG¹,Hongxing WANG^1,²,Xiguo LIU^1,²,Peilin ZHONG²,Bifeng LI³

¹ Department of Aeronautical Communication,Naval Aviation University,Yantai 264001,China
² Key Laboratory on Signal ＆Information Processing of Shandong Province,Naval Aviation University,Yantai 264001,China
³ College of Weaponry Engineering,Naval University of Engineering,Wuhan 430033,China

Revised:2020-01-09 Online:2020-04-25 Published:2020-04-30
Supported by:
The National Natural Science Foundation of China(61701518)

摘要/Abstract

摘要：

为进一步提升卫星导航系统的综合性能，在导频（测距）信号与数据信号分离的卫星导航信号设计思想的基础上，基于扩频码优良的自互相关特性，利用扩频码时移位置调制电文、数据信息，提出了基于扩频码时移位置调制的卫星导航信号设计方法。所提方法改变了以往仅利用扩频码相位加载信息的固有模式，大幅提升了数据通道信号的功率利用率。理论分析和仿真结果表明，在不提高导航信号总发射功率的前提下，所提方法既可大幅提高数据信号分量的信息传输速率，也可大幅提高导频信号分量与数据信号分量的功率比，进而综合提高了卫星通信导航系统的传输速率、接收机捕获跟踪性能、定位精度等技术指标。

关键词: 导航信号, 时移位置调制, 捕获跟踪, 功率效率

Abstract:

A novel navigation signal design method based on spread code time shift position modulation was proposed,which inherits the idea of separating the pilot signal component and the data signal component,and applies time shift position of the spread code to carry data information.The old pattern of using carrier phase to carry information was changed,the power efficiency of data signal components and the performances of the satellite navigation system were improved.Theoretical analysis and simulation results show that the proposed method can significantly improve the transmission rate of data signal component or power ratio of the pilot signal component to data signal component without increasing the total transmission power.Then,the transmission rate,acquisition and tracking performance,positioning accuracy and other technical indicators of the satellite navigation system can be further improved.

Key words: navigation signal, time shift position modulation, acquisition and tracking, power efficiency

中图分类号:

康家方,王红星,刘锡国,钟佩琳,李笔锋. 基于扩频码时移位置调制的卫星导航信号设计[J]. 通信学报, 2020, 41(4): 54-61.

Jiafang KANG,Hongxing WANG,Xiguo LIU,Peilin ZHONG,Bifeng LI. Novel navigation signal design based on spreading code time shift position modulation[J]. Journal on Communications, 2020, 41(4): 54-61.

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参考文献 16

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方案	数据调制方式	导频通道与数据通道功率比	比特速率（5位编码前）/(kbit.s^-1)	信息速率（5位编码后）/(bit.s^-1)	所需信噪比（误码率为10^-6）/dB
扩频码时移位置调制	1 024PPM	1:1	5	1 000	15.4
北斗B2a信号	BPSK	1:1	1	200	13.5

基于扩频码时移位置调制的卫星导航信号设计

Novel navigation signal design based on spreading code time shift position modulation

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