| 摘要: |
| 利用模糊贝叶斯网络方法对卫星导航系统的时间频率分系统的可靠性进行建模和分
析。在对时间频率系统故障汇总分析的基础上建立时间频率系统的可靠性模型，并对引发故
障的事件进行模糊描述。通过对时频系统发生故障的概率进行计算，可以对系统发生故障的
风险进行评估。模糊贝叶斯网络模型提高了故障概率描述的精确性，对系统的可靠性分析更
加准确可靠。仿真结果验证了该方法的正确性和可行性。 |
| 关键词: 卫星导航系统 时间频率系统 贝叶斯网络 风险评估 |
| DOI： |
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| 基金项目: |
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| Application of fuzzy Bayesian network model in satellite navigation system time and frequency subsystem′s reliability analysis |
| SUN Hai-yan,XIE Yan-min,LANG Zhi-guo,ZHANG Rui |
| (Beijing Global Information Center of Application and Exploration,Beijing 100094,China) |
| Abstract: |
| The reliability of time and frequency subsystem of satellite navigatio
n system is modeled and evaluated using fuzzy Bayesian network method. The mode
l of time and frequency is built by analysing the fault of time and frequency su
bsystem, and the matters resulting in the fault are described. By calculating th
e probability of the fault, the risk of system going wrong can be evaluated. Fuz
zy B
ayesian network model improves the accuracy for describing the fault probability
, which results in more exactly and more reliably analysing the system relia
bility. The result of simulation shows that the method is validity and feasible
for time and frequency subsystem. |
| Key words: satellite navigation system time and frequency subsystem Bayesian network risk evaluation |
