阿尔及利亚星基增强系统单频SBAS服务性能研究
doi: 10.11728/cjss2025.04.2024-0078 cstr: 32142.14.cjss.2024-0078
-
潘丽静 女, 1988年9月出生于河北省保定市, 现就职于航天恒星科技有限公司, 主要研究方向为卫星导航精密时间基准确定及精密定位方面等 -
金彪 男, 1988年6月出生于安徽省寿县, 现为航天恒星科技有限公司研究员, 博士, 主要研究方向为卫星导航精密时空基准建立维持及完好性增强等
作者简介:
通讯作者:
Study on service performance of single frequency SBAS in Algerian satellite-based augmentation system
-
摘要: 阿尔及利亚星基增强系统(ALG-SBAS)是基于阿尔及利亚通信卫星一号(Alcomsat-1)建设的面向阿尔及利亚地区的星基增强系统(SBAS), 已处于正式运行阶段. 为进一步了解掌握该系统的服务性能, 本文首先对该系统进行了介绍, 然后对该系统地球静止轨道(GEO)卫星播发电文稳定性、电离层延迟改正精度、定位精度及完好性进行了评估. 结果表明ALG-SBAS GEO 卫星具有较强稳定性, 电离层延迟改正百分比优于87%, ALG-SBAS定位精度比GPS定位有明显提升, 平均提升39%以上, SBAS PPP各站3D定位精度平均值优于0.45 m. 定位精度对标EGONS, 结果显示ALG-SBAS略差于EGONS. 同时对测站定位结果的完好性进行了分析, 在评估时段内ALG-SBAS未发生完好性风险事件, ALG-SBAS在I类垂直引导进近(APV-I)阶段的所有测站平均可用性为99.9%. 该星基增强系统服务性能满足单频服务指标, 可提供单频SBAS服务.Abstract: The Algerian Satellite-based Augmentation System (ALG-SBAS) is a satellite-based augmentation system (SBAS) based on the Algerian Communications Satellite 1 (Alcomsat-1), which is already in its official operational phase. In order to deeply understand the system service type and performance, this paper first introduces the system, and then evaluates the stability of the broadcast message of the geosynchronous orbit (GEO) satellite、Ionospheric delay correction accuracy、positioning accuracy and integrity. The results show that ALG-SBAS GEO satellite has strong stability. The ionospheric delay correction percentage is better than 87%. The positioning accuracy of The positioning accuracy of ALG-SBAS is significantly improved than that of GPS positioning, and the average positioning accuracy is increased by more than 39%. The average SBAS PPP 3D positioning accuracy of all stations is better than 0.45m. The positioning accuracy is compared with EGONS, and the results show that ALG-SBAS is slightly worse than EGONS. At the same time, the integrity of the station positioning results was analyzed, and no integrity risk events occurred in ALG-SBAS during the evaluation period. ALG-SBAS had an average availability of 99.9% at all stations in the Approach with Vertical Guidance-I(APV-I) phase. The service performance of the satellite-based augmentation system meets the single frequency service index and can provide single frequency SBAS service.
-
Key words:
- Satellite-based enhancement /
- Service performance /
- Continuity /
- Positioning accuracy /
- Integrity
-
图 3 各地面站电离层延迟改正百分比统计直方图
Figure 3. Statistical histogram of ionospheric delay correction percentage of each ground station
图 5 地面站SBAS定位精度相对GPS提升情况
Figure 5. Positioning accuracy of correction ALG-SBAS is improved compared with GPS
图 6 评估选取的北部6个测站分布
Figure 6. Distribution of the six stations in the north used for assessment
图 7 ALG-SBAS, GPS和EGNOS 68%定位精度统计
Figure 7. ALG-SBAS, GPS and EGNOS 68% positioning accuracy statistics
图 8 ALG-SBAS, GPS和EGNOS 95%定位精度统计
Figure 8. ALG-SBAS, GPS and EGNOS 95% positioning accuracy statistics
图 10 ALG-SBAS水平定位结果斯坦福图
Figure 10. Stanford diagram of ALG-SBAS horizontal positioning results
图 11 ALG-SBAS垂直定位结果斯坦福图
Figure 11. Stanford diagram of ALG-SBAS vertical positioning results
表 1 ALG-SBAS、EGNOS和WAAS播发消息缺失数目统计
Table 1. Statistics of missing messages broadcast by ALG-SBAS, EGNOS and WAAS
Day of Year (DOA) ALG-SBAS (PRN148) EGNOS (PRN136) WAAS (PRN135) 1―30 0 80 0 31―60 0 1199 0 61―100 11 25 7 
下载: 导出CSV
表 2 定位解算策略
Table 2. Positioning solution strategy
Type cut-off height angle Ionospheric model Tropospheric model Satellite ephemeris GPS SPP 10° Klobuchar Saastamoinen Broadcast SBAS SPP 10° SBAS Saastamoinen SBAS+
Broadcast
下载: 导出CSV
-
[1] WALTER T, SHALLBERG K, ALTSHULER E, et al. WAAS at 15[J]. Navigation, 2018, 65(4): 581-600 doi: 10.1002/navi.252 [2] TABTI L, KAHLOUCHE S, BENADDA B, et al. Improvement of single-frequency GPS positioning performance based on EGNOS corrections in Algeria[J]. Journal of Navigation, 2020, 73(4): 846-860 doi: 10.1017/S037346331900095X [3] BLANCH J, WALTER T, ENGE P, et al. Evaluation of a covariance-based clock and ephemeris error bounding algorithm for SBAS[C]//Proceedings of the 27th International Technical Meeting of the Satellite Division of the Institute of Navigation. Tampa, Florida: Institute of Navigation, 2014: 3270-3276 [4] 雷艳, 高延铭, 王金磊, 等. 北海区MSAS单点定位精度分析[J]. 海洋地质前沿, 2016, 32(12): 65-70LEI Yan, GAO Yanming, WANG Jinlei, et al. Precision of MSAS single-point positioning in Northern China Seas[J]. Marine Geology Frontiers, 2016, 32(12): 65-70 [5] CHEN S S, JIN B, LI D J, et al. Study on the prediction method of single and dual frequency service area for BDSBAS[C]//Proceedings of China Satellite Navigation Conference. Singapore: Springer, 2019: 228-237 [6] WU T, PECK S. An analysis of satellite integrity monitoring improvement for WAAS[C]//Proceedings of the 15th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2002). Portland, OR: Institute of Navigation, 2002: 756-765 [7] BLANCH J, WALTER T, ENGE P. A clock and ephemeris algorithm for dual frequency SBAS[C]//Proceedings of the 24th International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS 2011). Portland, OR: Institute of Navigation, 2011: 2513-2519 [8] 金彪, 魏巍, 陈姗姗, 等. SBAS星历改正数及UDRE参数生成算法分析[J]. 武汉大学学报·信息科学版, 2021, 46(1): 111-117JIN Biao, WEI Wei, CHEN Shanshan, et al. Analysis of SBAS ephemeris correction and UDRE generation algorithm[J]. Geomatics and Information Science of Wuhan University, 2021, 46(1): 111-117 [9] JIN B, CHEN S S, LI D J, et al. Performance analysis of SBAS ephemeris corrections and integrity algorithms in China region[J]. Satellite Navigation, 2021, 2(1): 15 doi: 10.1186/s43020-021-00045-z [10] SHAO B, DING Q, WU X B. Estimation method of SBAS dual-frequency range error integrity parameter[J]. Satellite Navigation, 2020, 1(1): 9 doi: 10.1186/s43020-020-00011-1 [11] JIN B, CHEN S S, LI D J, et al. Ionospheric correlation analysis and spatial threat model for SBAS in China region[J]. Advances in Space Research, 2020, 66(12): 2873-2887 doi: 10.1016/j.asr.2020.05.010 [12] SPARKS L, BLANCH J, PANDYA N. Estimating ionospheric delay using kriging: 1. Methodology[J]. Radio Science, 2011, 46(6): RS0D21 [13] 赵镇, 陈刚, 胡志刚. 星基增强系统L1频段信息服务性能分析[J]. 中国地震, 2020, 36(4): 912-923ZHAO Zhen, CHEN Gang, HU Zhigang. Service performance analysis on L1 frequnency of satellite-based augmentation system[J]. Earthquake Research in China, 2020, 36(4): 912-923 [14] 陈姗姗, 金彪, 赵立谦, 等. SBAS电文时序动态编排算法[J]. 北京航空航天大学学报, 2021, 47(10): 1996-2005CHEN Shanshan, JIN Biao, ZHAO Liqian, et al. Dynamic SBAS message scheduler algorithm[J]. Journal of Beijing University of Aeronautics and Astronautics, 2021, 47(10): 1996-2005 [15] 金彪, 陈姗姗, 李祝莲, 等. SBAS GEO卫星URE精度及定位增强研究[J]. 武汉大学学报·信息科学版, 2024, 49(7): 1166-1175 doi: 10.13203/j.whugis20210091JIN Biao, CHEN Shanshan, LI Zhulian, et al. SBAS GEO satellite user range error and position augmentation research[J]. Geomatics and Information Science of Wuhan University, 2024, 49(7): 1166-1175 doi: 10.13203/j.whugis20210091 [16] 蔡洪亮, 孟轶男, 耿长江, 等. 北斗三号全球导航卫星系统服务性能评估: 定位导航授时、星基增强、精密单点定位、短报文通信与国际搜救[J]. 测绘学报, 2021, 50(4): 427-435CAI Hongliang, MENG Yi’nan, GENG Changjiang, et al. BDS-3 performance assessment: PNT, SBAS, PPP, SMC and SAR[J]. Acta Geodaetica et Cartographica Sinica, 2021, 50(4): 427-435 [17] 金彪, 李锐, 王盾, 等. 星基增强系统单频服务性能评估方法[J]. 北京航空航天大学学报, 2024, 50(10): 3062-3073 doi: 10.13700/j.bh.1001-5965.2022.0785JIN Biao, LI Rui, WANG Dun, et al. Service performance assessment method of single frequency SBAS[J]. Journal of Beijing University of Aeronautics and Astronautics, 2024, 50(10): 3062-3073 doi: 10.13700/j.bh.1001-5965.2022.0785 [18] HEΒELBARTH A, WANNINGER L. SBAS orbit and satellite clock corrections for precise point positioning[J]. GPS Solutions, 2013, 17(4): 465-473 doi: 10.1007/s10291-012-0292-6 [19] 李东俊, 金彪, Takka Elhadi 等. 阿尔及利亚星基增强系统设计及验证[C]//第十届中国卫星导航年会论文集. 北京, 2019Li Dongjun, Jin biao, Takka Elhadi, et al. Design and validation of Algerian satellite based augmentation system[C]//Proceedings of the 10th China Satellite Navigation Annual Conference, Beijing, 2019 [20] RTCA. Minimum operational performance standards for global positioning system/wide area augmentation system airborne equipment[S]. Washington D C: RTCA, 2016 -
-
下载:
计量
- 文章访问数: 226
- HTML全文浏览量: 24
- PDF下载量: 11
-
被引次数:
0(来源:Crossref)
0(来源:其他)
