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WANG Li, LI Yi, SHU Bao, TIAN Yunqing, WANG Bingjie. RAIM Performance Analysis of Three Typical Low-orbit Augmentation Constellations Combined with BDS Applications[J]. Geomatics and Information Science of Wuhan University. doi: 10.13203/j.whugis20210567
Citation: WANG Li, LI Yi, SHU Bao, TIAN Yunqing, WANG Bingjie. RAIM Performance Analysis of Three Typical Low-orbit Augmentation Constellations Combined with BDS Applications[J]. Geomatics and Information Science of Wuhan University. doi: 10.13203/j.whugis20210567

RAIM Performance Analysis of Three Typical Low-orbit Augmentation Constellations Combined with BDS Applications

doi: 10.13203/j.whugis20210567
Funds:

The National Natural Science Foundation of China (41877289,42004024,42174006,42127802)

  • Received Date: 2021-10-22
  • Objectives: Receiver autonomous integrity monitoring (RAIM) is the guarantee of highly reliable navigation and positioning for terminal users, and the development of low earth orbit (LEO) satellites brings new opportunities for integrity monitoring. However, there may be significant differences in terminal RAIM performance under different LEO constellation enhancements. Methods: This paper systematically evaluates the RAIM availability and fault detection effects of the Beidou system (BDS) under LEO satellite augmentation based on three typical LEO constellations:high-inclination (80 satellites), mid-inclination (120 satellites) and mixed-inclination constellations (168 satellites). Results: The simulation results show that the RAIM availability effect under high-inclination constellation enhancement is most effective in high latitudes, while in the mid- and low- latitude regions, the RAIM availability effect under the enhancement of the mid-inclination constellation is best. The global RAIM availability in the non-precision approach (NPA) phase is improved by 30.5%, 29.0%, and 41.0% after adding the high-inclination, mid-orbit inclination, and mixed-inclination constellations, respectively, compared with the BDS. Conclusions: It can be seen that the hybrid constellation composed of different orbital inclinations can better compensate for the defects in spatial coverage of the visible satellites, and its global RAIM availability enhancement effect is optimal, and the minimum pseudorange deviation can be detected under the enhanced RAIM is reduced by 33.3 m compared with the previous one.
  • [1] Yang Y X, Mao Y, Sun B J.Basic Performance and Future Developments of BeiDou Global Navigation Satellite System[J].Satellite Navigation, 2020, 1(1):1
    [2] Yang Y X, Xu J Y.GNSS Receiver Autonomous Integrity Monitoring (RAIM) Algorithm Based on Robust Estimation[J].Geodesy and Geodynamics, 2016, 7(2):117-123
    [3] GPS-Galileo Working Group C ARAIM Technical Subgroup Milestone 3 Report[EB/OL].https://www.gps.gov/policy/cooperation/europe/2016/working-group-c/ARAIM-milestone-3-report.pdf.
    [4] 王文博,张鹏飞,许承东,等.基于BDS/GPS的奇偶矢量RAIM算法研究[C]//第七届中国卫星导航学术年会论文集——S07卫星导航增强技术.长沙, 2016:66-70
    [5] 卢广毅,赵春梅,邵银星.基于RAIM算法的低轨增强GNSS定位故障检测[C]//第十一届中国卫星导航年会论文集——S07卫星导航增强技术.成都, 2020:127-133
    [6] Space X To Build 4,000 Broadband Satellites in Seattle[EB/OL].https://spacenews.com/spacex-opening-seattle-plant-to-build-4000-broadband-satellites/
    [7] 关梅倩,焦文海,贾小林,等.基于导航增强的低轨卫星星座设计[C]//第九届中国卫星导航学术年会论文集——S07卫星导航增强技术.哈尔滨, 2018:22-26
    [8] 沈叶锋,张一.基于通导一体化的低轨卫星导航增强系统设计[C]//第十一届中国卫星导航年会论文集——S07卫星导航增强技术.成都, 2020:25-29
    [9] Overland J E, Wang M Y.When will the Summer Arctic be nearly Sea Ice Free?[J].Geophysical Research Letters, 2013, 40(10):2097-2101
    [10] Li X X, Ma F J, Li X, et al.LEO Constellation-Augmented Multi-GNSS for Rapid PPP Convergence[J].Journal of Geodesy, 2019, 93(5):749-764
    [11] Ma F J, Zhang X H, Li X X, et al.Hybrid Constellation Design Using a Genetic Algorithm for a LEO-Based Navigation Augmentation System[J].GPS Solutions, 2020, 24(2):62
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RAIM Performance Analysis of Three Typical Low-orbit Augmentation Constellations Combined with BDS Applications

doi: 10.13203/j.whugis20210567
Funds:

The National Natural Science Foundation of China (41877289,42004024,42174006,42127802)

Abstract: Objectives: Receiver autonomous integrity monitoring (RAIM) is the guarantee of highly reliable navigation and positioning for terminal users, and the development of low earth orbit (LEO) satellites brings new opportunities for integrity monitoring. However, there may be significant differences in terminal RAIM performance under different LEO constellation enhancements. Methods: This paper systematically evaluates the RAIM availability and fault detection effects of the Beidou system (BDS) under LEO satellite augmentation based on three typical LEO constellations:high-inclination (80 satellites), mid-inclination (120 satellites) and mixed-inclination constellations (168 satellites). Results: The simulation results show that the RAIM availability effect under high-inclination constellation enhancement is most effective in high latitudes, while in the mid- and low- latitude regions, the RAIM availability effect under the enhancement of the mid-inclination constellation is best. The global RAIM availability in the non-precision approach (NPA) phase is improved by 30.5%, 29.0%, and 41.0% after adding the high-inclination, mid-orbit inclination, and mixed-inclination constellations, respectively, compared with the BDS. Conclusions: It can be seen that the hybrid constellation composed of different orbital inclinations can better compensate for the defects in spatial coverage of the visible satellites, and its global RAIM availability enhancement effect is optimal, and the minimum pseudorange deviation can be detected under the enhanced RAIM is reduced by 33.3 m compared with the previous one.

WANG Li, LI Yi, SHU Bao, TIAN Yunqing, WANG Bingjie. RAIM Performance Analysis of Three Typical Low-orbit Augmentation Constellations Combined with BDS Applications[J]. Geomatics and Information Science of Wuhan University. doi: 10.13203/j.whugis20210567
Citation: WANG Li, LI Yi, SHU Bao, TIAN Yunqing, WANG Bingjie. RAIM Performance Analysis of Three Typical Low-orbit Augmentation Constellations Combined with BDS Applications[J]. Geomatics and Information Science of Wuhan University. doi: 10.13203/j.whugis20210567
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