北斗三号导航定位技术体制与服务性能

doi:10.11947/j.AGCS.2019.20190091

测绘学报 ›› 2019, Vol. 48 ›› Issue (7): 810-821.doi: 10.11947/j.AGCS.2019.20190091

北斗三号导航定位技术体制与服务性能

郭树人¹, 蔡洪亮¹, 孟轶男¹, 耿长江², 贾小林³, 毛悦³, 耿涛⁴, 饶永南⁵, 张慧君⁵, 谢新⁴

1. 北京跟踪与通信技术研究所, 北京 100094;
2. 中国卫星导航系统管理办公室测试评估研究中心, 北京 100094;
3. 西安测绘研究所, 陕西西安 710054;
4. 武汉大学卫星导航定位技术研究中心, 湖北武汉 430079;
5. 中国科学院国家授时中心, 陕西西安 710600

收稿日期:2019-03-15 修回日期:2019-04-29 出版日期:2019-07-20 发布日期:2019-07-26
通讯作者: 蔡洪亮 E-mail:caibanyu@126.com
作者简介:郭树人(1972-),男,研究员,研究方向为卫星导航系统总体设计、评估与应用。

BDS-3 RNSS technical characteristics and service performance

GUO Shuren¹, CAI Hongliang¹, MENG Yinan¹, GENG Changjiang², JIA Xiaolin³, MAO Yue³, GENG Tao⁴, RAO Yongnan⁵, ZHANG Huijun⁵, XIE Xin⁴

1. Beijing Institute of Tracking and Telecommunication Technology, Beijing 100094, China;
2. Test and Assessment Research Center of China Satellite Navigation Office, Beijing 100094, China;
3. Xi'an Research Institute of Surveying and Mapping, Xi'an 710054, China;
4. GNSS Research Center of Wuhan University, Wuhan 430079;
5. National Timing Service Center, China Academy of Science, Xi'an 710600, China

Received:2019-03-15 Revised:2019-04-29 Online:2019-07-20 Published:2019-07-26

摘要/Abstract

摘要： 介绍了北斗三号系统的星座设计、服务类型、导航信号体制、时空基准以及轨道确定与时间同步机制等技术体制，分析提出了评估北斗三号导航定位服务性能的指标体系，指标涵盖时空基准、空间信号质量、空间信号精度和服务性能4个方面，综合利用全球数据资源对北斗三号基本系统的导航定位服务性能进行了评估。结果显示，各信号分量有效功率比偏差优于0.25 dB，S曲线过零点偏差（SCB）优于0.3 ns，满足设计要求；北斗三号基本系统当前全球位置精度因子（PDOP）可用性优于85.0%，空间信号测距误差0.48 m（RMS），空间信号连续性99.99%，空间信号可用性99.78%，UTC偏差误差优于19.1 ns（95%），均满足系统服务性能规范承诺的指标。相对于北斗二号而言，北斗三号在覆盖能力、空间信号精度、空间信号可用性、空间信号连续性等方面均有显著提升。

关键词: 北斗三号, 技术体制, 服务性能, 评估

Abstract: A detailed description of BDS-3 including constellation design, different types of services, signal structure, coordinate and time frame, mechanics of orbit determination and time synchronous is provided. A RNSS service performance assessment parameters list is provided. It consists of parameters about time and coordinate frame, signal quality, signal in space accuracy and service performance. Tracking data is collected from stations globally distributed, and performance of BDS-3 initial service is assessed. From results, ratio bias of signal component effective power is less than 0.25 dB, S curve bias is less than 0.3 ns, position dilution of precision (PDOP) availability of current constellation is better than 85% at global level, signal-in-space ranging error is 0.48 m(RMS), signal-in-space availability reached 99.78%, signal-in-space continuity reached 99.99%, UTC offset error is 19.1 ns. All of them fulfill the design specification and requirements of BDS open service performance standard. Compared to BDS-2 satellites, current BDS-3 constellation realized global coverage and achieved a better performance in signal-in-space error, signal-in-space availability and signal-in-space continuity.

Key words: BDS-3, technical characteristics, service performance, assessment

中图分类号:

P228

郭树人, 蔡洪亮, 孟轶男, 耿长江, 贾小林, 毛悦, 耿涛, 饶永南, 张慧君, 谢新. 北斗三号导航定位技术体制与服务性能[J]. 测绘学报, 2019, 48(7): 810-821.

GUO Shuren, CAI Hongliang, MENG Yinan, GENG Changjiang, JIA Xiaolin, MAO Yue, GENG Tao, RAO Yongnan, ZHANG Huijun, XIE Xin. BDS-3 RNSS technical characteristics and service performance[J]. Acta Geodaetica et Cartographica Sinica, 2019, 48(7): 810-821.

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北斗三号导航定位技术体制与服务性能

BDS-3 RNSS technical characteristics and service performance

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