基于高增益接收系统的Galileo E1信号质量评估方法研究

doi:10.3969/j.issn.0372-2112.2019.08.011

电子学报 ›› 2019, Vol. 47 ›› Issue (8): 1685-1691.DOI: 10.3969/j.issn.0372-2112.2019.08.011

基于高增益接收系统的Galileo E1信号质量评估方法研究

康立^1,2,3, 饶永南^1,2, 宿晨庚^4,5, 石慧慧^1,2,3, 杨德进^1,2,3, 贺成艳^1,2, 王萌^1,2,3

1. 中国科学院国家授时中心, 陕西西安 710600;
2. 中国科学院精密导航定位与定时技术重点实验室, 陕西西安 710600;
3. 中国科学院大学电子电气与通信工程学院, 北京 101408;
4. 北京跟踪通信研究所, 北京 100094;
5. 中国人民解放军国防科技大学电子与信息工程学院, 湖南长沙 410073

收稿日期:2018-12-24 修回日期:2019-05-24 出版日期:2019-08-25
- 作者简介:
- 康立男,1990年5月出生于湖南省汨罗市.现于中国科学院国家授时中心导航与通信研究室博士在读.从事GNSS新型导航信号质量评估方法研究工作.E-mail:1039086352@qq.com;饶永南 男,1982年1月出生于福建龙岩,现为中国科学院国家授时中心导航与通信研究室副研究员.主要研究方向为导航信号测试及性能评估研究工作.E-mail:ryn@ntsc.ac.cn
- 基金资助:
- 国家科技重大专项 (No.GFZF0306ZXWX004HT01）

Research on Galileo E1 Signal Quality Assessment Method Based on High Gain Receiving System

KANG Li^1,2,3, RAO Yong-nan^1,2, SU Chen-geng^4,5, SHI Hui-hui^1,2,3, YANG De-jin^1,2,3, HE Cheng-yan^1,2, WANG Meng^1,2,3

1. National Time Service Center, Chinese Academy of Sciences, Xi'an, Shaanxi 710600, China;
2. Key Laboratory of Precision Navigation and Timing Technology, Chinese Academy of Sciences, Xi'an, Shaanxi 710600, China;
3. School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 101408, China;
4. Beijing Tracking and Communication Technology Institution, Beijing 100094, China;
5. School of Electronics and Information Engineering, National Defense Science and Technology University of China, Changsha, Hunan 410073, China

Received:2018-12-24 Revised:2019-05-24 Online:2019-08-25 Published:2019-08-25

摘要/Abstract

摘要： Galileo系统在E1频点采用Interplex调制方式播发导航信号，由于缺乏E1信号功率分配和伪码序列等先验信息，一般的研究人员只能开展有限的信号质量特性研究.针对该问题，提出一套基于高增益天线的空间信号质量评估方法，实现了E1授权信号的解析，完善了E1信号评估体系.运用相关功率法来解决信号分量功率比问题，采用跟踪结果解决相位偏差估计问题，提出加权组合平均和码相位平均相结合的新型时域波形分离方法，克服了电文和码多普勒对时域波形特性评估的影响，采用S曲线过零点偏差（S-curve offset Biases，SCB）等参数进行信号测距偏差定量评估.通过该方法对Galileo GSAT-0214卫星进行了评估，结果显示：该卫星E1各信号分量SCB小于0.2ns，测距性能优异，其复用效率达到了97.8%，优于GPS L1信号和北斗三号系统（BDS-3） B1信号.

关键词: 空间信号质量, Galileo, 授权信号, 功率分配, 时域波形, 相关性能

Abstract: Galileo system uses Interplex modulation to broadcast navigation signals at the E1 frequency.Due to the lack of prior information such as E1 signal power allocation and pseudo-code sequences,researchers can only carry out limited signal quality characteristics studies.Aiming at this problem,this paper proposes a signal-in-space quality assessment method based on high gain antenna,which realizes the analysis of E1 authorization signal and perfects the E1 signal evaluation system.The related power method is proposed to solve the signal component power ratio problem.The tracking result is used to solve the phase deviation estimation problem.A new time domain waveform separation method combining weighted combination averaging and code phase averaging is proposed,which overcomes the influence of message and code Doppler on time domain waveform characteristics evaluation.The S-curve offset Biases (SCB) parameters are used to quantitatively evaluate the signal ranging deviation.In this paper,the Galileo GSAT-0214 satellite is evaluated by this method.The results show that the signal component SCB of E1 is less than 0.2 ns,and the ranging performance is excellent.The multiplexing efficiency is 97.8%,which is better than GPS L1 signal and BOS-3 system B1 signal.

Key words: signal-in-space, Galileo, authorized signal, power distribution, time waveform, correlation performance

中图分类号:

TN967.1

康立, 饶永南, 宿晨庚, 石慧慧, 杨德进, 贺成艳, 王萌. 基于高增益接收系统的Galileo E1信号质量评估方法研究[J]. 电子学报, 2019, 47(8): 1685-1691.

KANG Li, RAO Yong-nan, SU Chen-geng, SHI Hui-hui, YANG De-jin, HE Cheng-yan, WANG Meng. Research on Galileo E1 Signal Quality Assessment Method Based on High Gain Receiving System[J]. Acta Electronica Sinica, 2019, 47(8): 1685-1691.

参考文献

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基于高增益接收系统的Galileo E1信号质量评估方法研究

Research on Galileo E1 Signal Quality Assessment Method Based on High Gain Receiving System

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