Evaluation of the Galileo high-accuracy service SSR product quality and PPP performance

IF 2.8 3区地球科学 Q2 ASTRONOMY & ASTROPHYSICS Advances in Space Research Pub Date : 2025-02-01 Epub Date: 2024-11-13 DOI:10.1016/j.asr.2024.11.021

Meng Gao , Ziheng Meng , Huizhong Zhu , Tianjun Liu , Aigong Xu , Chunbo Tan , Zhihua Cao

{"title":"Evaluation of the Galileo high-accuracy service SSR product quality and PPP performance","authors":"Meng Gao , Ziheng Meng , Huizhong Zhu , Tianjun Liu , Aigong Xu , Chunbo Tan , Zhihua Cao","doi":"10.1016/j.asr.2024.11.021","DOIUrl":null,"url":null,"abstract":"<div><div>The Galileo navigation satellite system (Galileo) High-Accuracy Service (HAS) is a global navigation satellite system (GNSS) augmentation service proposed by the European Union that providing free of charge orbit, clock and pseudo-range biases corrections to users around the world through E6 signals and by terrestrial means (Internet). However, there has been limited research on the performance of the HAS State Space Representation (SSR) products broadcast by the Galileo Service Centre (GSC). However, there has been limited research on the performance of the HAS SSR products broadcast by the GSC. This study uses BNC software to receive HAS SSR products and compares them with SSR products from three analysis centers with relatively high accuracy: Wuhan University (WHU), the Chinese Academy of Sciences (CAS), and Centre National d’Etudes Spatiales (CNES), and analyzes them in terms of orbit, clock error, and positioning performance. In addition, Galileo HAS as a satellite-based augmentation service, this study chooses BDS PPP B2b, which is also a satellite-based augmentation service, as a comparison to analyze the performance of the HAS augmentation service. The results indicate that the signal-in-space ranging error (SISRE) values for Global Positioning System (GPS) and Galileo corrected by HAS are 7.26 cm and 5.79 cm, respectively. The average convergence times for the GPS + Galileo combination in the static and kinematic modes are 9.4 min and 14.1 min, respectively. Moreover, in kinematic mode, single-system positioning achieved an accuracy of better than 12 cm in the E direction and better than 17 cm in the U direction. In comparison with BeiDou navigation satellite system (BDS) PPP-B2b, the average convergence time of HAS under static mode is 16 min, while that of B2b requires 19 min. Meanwhile, the positioning accuracy of B2b products in the three directions is improved by more than 1 cm compared with that of HAS. The convergence time of HAS in kinematic mode is 12 min shorter than that of B2b.</div></div>","PeriodicalId":50850,"journal":{"name":"Advances in Space Research","volume":"75 3","pages":"Pages 2669-2682"},"PeriodicalIF":2.8000,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advances in Space Research","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0273117724011438","RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/11/13 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}

引用次数: 0

Abstract

The Galileo navigation satellite system (Galileo) High-Accuracy Service (HAS) is a global navigation satellite system (GNSS) augmentation service proposed by the European Union that providing free of charge orbit, clock and pseudo-range biases corrections to users around the world through E6 signals and by terrestrial means (Internet). However, there has been limited research on the performance of the HAS State Space Representation (SSR) products broadcast by the Galileo Service Centre (GSC). However, there has been limited research on the performance of the HAS SSR products broadcast by the GSC. This study uses BNC software to receive HAS SSR products and compares them with SSR products from three analysis centers with relatively high accuracy: Wuhan University (WHU), the Chinese Academy of Sciences (CAS), and Centre National d’Etudes Spatiales (CNES), and analyzes them in terms of orbit, clock error, and positioning performance. In addition, Galileo HAS as a satellite-based augmentation service, this study chooses BDS PPP B2b, which is also a satellite-based augmentation service, as a comparison to analyze the performance of the HAS augmentation service. The results indicate that the signal-in-space ranging error (SISRE) values for Global Positioning System (GPS) and Galileo corrected by HAS are 7.26 cm and 5.79 cm, respectively. The average convergence times for the GPS + Galileo combination in the static and kinematic modes are 9.4 min and 14.1 min, respectively. Moreover, in kinematic mode, single-system positioning achieved an accuracy of better than 12 cm in the E direction and better than 17 cm in the U direction. In comparison with BeiDou navigation satellite system (BDS) PPP-B2b, the average convergence time of HAS under static mode is 16 min, while that of B2b requires 19 min. Meanwhile, the positioning accuracy of B2b products in the three directions is improved by more than 1 cm compared with that of HAS. The convergence time of HAS in kinematic mode is 12 min shorter than that of B2b.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

伽利略高精度服务SSR产品质量与PPP绩效评价

伽利略导航卫星系统（Galileo）高精度服务（HAS）是欧盟提出的一项全球导航卫星系统（GNSS）增强服务，通过E6信号和地面手段（互联网）向世界各地的用户提供免费的轨道、时钟和伪距离偏差校正。然而，对伽利略服务中心（GSC）广播的has状态空间表示（SSR）产品的性能研究有限。然而，对GSC广播的has SSR产品的性能研究有限。本研究利用BNC软件接收HAS SSR产品，并将其与武汉大学（WHU）、中国科学院（CAS）和法国国家空间研究中心（CNES）三个精度较高的分析中心的SSR产品进行比较，从轨道、时钟误差和定位性能等方面进行分析。此外，伽利略HAS作为卫星增强服务，本研究选择同样是卫星增强服务的BDS PPP B2b作为对比，分析HAS增强服务的性能。结果表明，GPS和伽利略系统经HAS校正后的空间信号测距误差分别为7.26 cm和5.79 cm。GPS + Galileo组合在静态和运动模式下的平均收敛时间分别为9.4 min和14.1 min。在运动学模式下，单系统定位在E方向上的精度优于12 cm，在U方向上的精度优于17 cm。与北斗导航卫星系统（BDS） PPP-B2b相比，静态模式下HAS的平均收敛时间为16 min， B2b的平均收敛时间为19 min。同时，B2b产品在三个方向的定位精度比HAS提高了1 cm以上。HAS在运动模式下的收敛时间比B2b的收敛时间短12 min。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Advances in Space Research 地学天文-地球科学综合

CiteScore

5.20

自引率

11.50%

发文量

800

审稿时长

5.8 months

期刊介绍： The COSPAR publication Advances in Space Research (ASR) is an open journal covering all areas of space research including: space studies of the Earth''s surface, meteorology, climate, the Earth-Moon system, planets and small bodies of the solar system, upper atmospheres, ionospheres and magnetospheres of the Earth and planets including reference atmospheres, space plasmas in the solar system, astrophysics from space, materials sciences in space, fundamental physics in space, space debris, space weather, Earth observations of space phenomena, etc. NB: Please note that manuscripts related to life sciences as related to space are no more accepted for submission to Advances in Space Research. Such manuscripts should now be submitted to the new COSPAR Journal Life Sciences in Space Research (LSSR). All submissions are reviewed by two scientists in the field. COSPAR is an interdisciplinary scientific organization concerned with the progress of space research on an international scale. Operating under the rules of ICSU, COSPAR ignores political considerations and considers all questions solely from the scientific viewpoint.