Safety assessment of virtualization computing platform for avionics system of civil aircraft
Aiming at the main problems that affect the security of airborne computing platform after virtualization,such as time-space isolation,fault isolation and schedulability,this paper studies the security level evaluation of airborne computing platform under virtualization environment.Considering the characteristics of virtualized avionics system,a security calculation method based on analytic hierarchy process(AHP)and gray correlation analysis(GARD)is proposed.The safety evaluation decision tree of airborne virtualization computing platform is estab-lished,and the weight of each safety capability is calculated by AHP method,and the overall safety score of the system is given.On this basis,combined with GRAP method and referring to the safety evaluation of avionics sys-tem,the safety level with the highest adaptability between the test system and DAL safety level requirements is cal-culated,realizing security grade evaluation of airborne computing platform under virtualization environment.
civil aircraftcomputing platformvirtualizationfunctional safetyanalytical hierarchy process
万方数据
维普
