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System of Systems Safety Analysis of GNSS based on Functional Dependency Network Analysis |
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PP: 2227-2235 |
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doi:10.18576/amis/100625
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Author(s) |
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Wangxun Zhang,
Zhifei Li,
Weiping Wang,
Qun Li,
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Abstract |
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| The characteristics of the system of systems (SoS) present great challenges to the safety analysis of Global Navigation
Satellite Systems (GNSS). Traditional safety analysis methods and techniques do not work well in a complex SoS, so new safety
analysis technologies are needed to adapt to safety problems in SoS. This study first expounds upon the shortcomings of traditional
safety analysis methods on GNSS safety and vulnerability study. Then some discussion and works on SoS safety is shown to introduce
this new field. In addition, the Functional Dependency Network Analysis (FDNA) method is introduced and an SoS safety modeling
and analysis method is proposed, together with detailed processes, which is based on FDNA. Finally, the application of this method is
demonstrated through a case study. Based on the case study, it appears that FDNA has great potential and applicability to SoS safety
analyses that are otherwise difficult for traditional models or methods to accommodate. |
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