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The deployment of global navigation satellite system (GNSS) has significantly enhanced navigation results due to the improved satellite distribution. Based on this, the realization of Advanced Receiver Autonomous Integrity Monitoring (Advanced RAIM), which requires localizer performance with vertical guidance down to 200 feet (LPV-200), becomes possible. However, the substantial increase in the number of satellites will lead to a heavy burden on computational load. Therefore, a novel satellite selection algorithm is designed to take LPV-200 requirements into consideration. Firstly, we utilize a fast geometric method to determine an initial set while ensuring the feasibility of every constellation through the algorithm. Furthermore, a comprehensive algorithm for vertical accuracy and vertical protection level (VPL) is proposed. Ultimately, the simulation demonstrates superiority of comprehensive algorithm under the fixed and non-fixed number scheme.

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Satellite Selection Algorithm for LPV-200 Requirements Based on Dual-Constellation System

  • 会议论文

  • 发表日期：

    2025年

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  • Shaohua Yang,
  • Xiaodong Zhang,
  • Qixuan Sun,
  • Zhiyu Yin,
  • Haoming Wang,
  • Bin Xu

摘要

The deployment of global navigation satellite system (GNSS) has significantly enhanced navigation results due to the improved satellite distribution. Based on this, the realization of Advanced Receiver Autonomous Integrity Monitoring (Advanced RAIM), which requires localizer performance with vertical guidance down to 200 feet (LPV-200), becomes possible. However, the substantial increase in the number of satellites will lead to a heavy burden on computational load. Therefore, a novel satellite selection algorithm is designed to take LPV-200 requirements into consideration. Firstly, we utilize a fast geometric method to determine an initial set while ensuring the feasibility of every constellation through the algorithm. Furthermore, a comprehensive algorithm for vertical accuracy and vertical protection level (VPL) is proposed. Ultimately, the simulation demonstrates superiority of comprehensive algorithm under the fixed and non-fixed number scheme.