摘要： 随着全球导航卫星系统空间星座的增多以及双频技术的发展，用于航路阶段的常规接收机自主完好性监测算法不能满足LPV-200进近对完好性的要求，因此，出现应用于进近阶段的高级接收机自主完好性监测(ARAIM)技术。针对LPV-200进近，基于对垂直保护限值的理论分析，研究ARAIM可用性预测算法，并设计ARAIM瞬时可用性预测系统。仿真结果表明，该系统能满足LPV-200进近对完好性的要求，在中国区域内，当可用性设置为99.9%时，ARAIM预测算法的覆盖率可达100%。
关键词:
高级接收机自主完好性监测,
垂直保护限值,
有效监视门限,
LPV-200进近,
可用性预测
Abstract: With the increment of Global Navigation Satellite System(GNSS) constellation and the development of dual-frequency technology, conventional Receiver Autonomous Integrity Monitoring(RAIM) algorithm which is used in en-route flight, can’t fulfill the integrity requirements of LPV-200 approach. Advanced Receiver Autonomous Integrity Monitoring(ARAIM) gradually appears which is applied in approach. Aiming at LPV-200 approach, the algorithm of ARAIM availability prediction is researched based on the theoretical analysis of Vertical Protection Level(VPL), studies the ARAIM availability prediction algorithm, and designs ARAIM instantaneous availability prediction system. Simulation results show that this system can meet the requirements of LPV-200 approach to integrity, the coverage rate of ARAIM prediction algorithm is up to 100% in Chinese area when availability is set to 99.9%.
Key words:
Advanced Receiver Autonomous Integrity Monitoring(ARAIM),
Vertical Protection Level(VPL),
Effective Monitoring Threshold(EMT),
LPV-200 approach,
availability prediction
中图分类号:
朱金芳, 倪育德, 王凯, 秦哲. ARAIM可用性预测系统的设计与实现[J]. 计算机工程, 2013, 39(8): 121-125,130.
SHU Jin-Fang, NI Yo-De, WANG Kai, QIN Zhe. Design and Implementation of ARAIM Availability Prediction System[J]. Computer Engineering, 2013, 39(8): 121-125,130.