| 三频GNSS接收机的RAIM算法研究 |
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| 引用本文： | 郭婧,陆明泉,崔晓伟,冯振明.三频GNSS接收机的RAIM算法研究[J].宇航学报,2011(8). |
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| 作者姓名： | 郭婧 陆明泉 崔晓伟 冯振明 |
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| 作者单位： | 清华大学电子工程系; |
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| 摘 要： | 新一代全球导航卫星系统(GNSS)将为民用用户提供多个可用频点。为了使接收机能够充分利用多频点的卫星信号,提高系统的完好性,提出了一种能够用于三频GNSS接收机的接收机自主完好性监测(RAIM)算法。该算法通过建立三频线性化测量方程,将各频点的伪距信息融合起来。对三频伪距测量误差进行预白化处理,从而可以沿用奇偶矢量法的基本原理进行故障检测和隔离。经过详细理论推导,得到了三频RAIM算法中奇偶矩阵与单频奇偶矩阵间的简单转换关系,极大程度地降低了故障检测和隔离的计算复杂度,更易于在GNSS接收机中实现。仿真结果表明,三频RAIM算法可以提高传统单频RAIM算法的故障检测率和隔离率,尤其在伪距偏差较小的时候,性能改善更为显著。
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| 关 键 词： | 三频 接收机自主完好性监测 奇偶矢量法 故障检测 故障隔离 |
Research on RAIM Algorithm for Triple-Frequency GNSS Receiver |
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| GUO Jing,LU Ming-quan,CUI Xiao-wei,FENG Zhen-ming.Research on RAIM Algorithm for Triple-Frequency GNSS Receiver[J].Journal of Astronautics,2011(8). |
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| Authors: | GUO Jing LU Ming-quan CUI Xiao-wei FENG Zhen-ming |
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| Institution: | GUO Jing,LU Ming-quan,CUI Xiao-wei,FENG Zhen-ming(Department of Electronic Engineering,Tsinghua University,Beijing 100084,China) |
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| Abstract: | In order to make full use of the multi-frequency signal in the future Global Navigation Satellite System(GNSS) and improve the system integrity,a new Receiver Autonomous Integrity Monitoring(RAIM) algorithm for triple-frequency GNSS receivers is proposed.In this algorithm,a triple-frequency linearized measurement equation is built and should be pre-whitened,so that the parity vector method can be adopted for fault detection and isolation.The parity matrix for triple-frequency RAIM algorithm can be obtained ... |
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| Keywords: | Triple-frequency Receiver autonomous integrity monitoring(RAIM) Parity vector method Fault detection Fault isolation |
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