| 卫星故障诊断的最优奇偶向量法 |
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| 引用本文： | 杨静,张洪钺.卫星故障诊断的最优奇偶向量法[J].航空学报,2002,23(2):183-186. |
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| 作者姓名： | 杨静 张洪钺 |
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| 作者单位： | 北京航空航天大学,自动化科学与电气工程学院,北京,100083 |
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| 摘 要： | 提供一种卫星故障诊断方法以提高 GPS导航的完整性。该方法利用最优奇偶向量来检测和诊断卫星故障以提高卫星故障诊断的准确性。仿真结果显示,在故障幅值较小的情况下最优奇偶向量方法相比广义似然比方法可以提高故障的正确检测率和正确诊断率。该方法还可以缩短检测斜坡型故障的时间,从而提高了系统的可靠性。
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| 关 键 词： | 最优奇偶向量 广义似然比法(GLT) 全球定位系统(GPS) 故障诊断 |
| 文章编号： | 1000-6893(2002)02-0183-04 |
| 修稿时间： | 2001年3月29日 |
SATELLITE FAULT DIAGNOSIS BASED ON OPTIMAL PARITY VECTOR METHOD |
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| YANG Jing,ZHANG Hong yue.SATELLITE FAULT DIAGNOSIS BASED ON OPTIMAL PARITY VECTOR METHOD[J].Acta Aeronautica et Astronautica Sinica,2002,23(2):183-186. |
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| Authors: | YANG Jing ZHANG Hong yue |
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| Institution: | Faculty 301, Beijing University of Aeronautics and Astronautics, Beijing 100083, China |
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| Abstract: | In this paper, a fault diagnosis approach is proposed to improve the integrity of Global Position System. The optimal parity vector is used to detect and diagnose satellite faults and improve the validity of satellite fault diagnosis, especially for small fault. Simulation results show that the correct detection ratio and the correct diagnosis ratio of using optimal parity vector method are higher than those of using generalized likelihood tests under the condition of small fault. The optimal parity vector method can also shorten the time spent on detecting fault. Thereby this method improves the system reliability. |
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| Keywords: | optimal parity vector generalized likelihood test global position system fault diagnosis |
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