Research On Survivability Of SWIM Core Services

As a new generation air traffic management system,the System Wide Information Management improves the architecture of traditional ATM systems and reduces the coupling between different aviation systems.Its core services are designed to provide more secure,efficient and reliable information exchange service for aviation subsystems.As a platform for information exchange between various systems,the survivability of SWIM is related to the safety of the entire ATM system in the event of an accident.Based on the research on SWIM interoperability architecture and SWIM core service,this dissertation qualitatively analyzes the potential survivability threat of SWIM,gives the definition of SWIM survivability,and studies the measures to ensure the survivability of SWIM core services.Firstly,based on the threats faced by SWIM,the SWIM survivability scheme is proposed based on the principle of redundant heterogeneity,randomization and self-adaptation.Using gray correlation analysis and Lattice Close-Degree,the SWIM survivability scheme is quantitatively evaluated from four aspects: reliability,availability,confidentiality and integrity.The experimental results show that the proposed survivability framework can guarantee the SWIM system to provide reliable information services in the face of attacks and natural disasters.Secondly,the named data network can be used to efficiently distribute the routing mechanism for acquiring data and the SWIM routing mechanism is designed.Aiming at the problem that the critical routing nodes in SWIM may be faulty,a local rerouting mechanism is proposed to reduce the information transmission delay after the failure of the routing node and ensure the continuity of the service.Experimental results show that the scheme can improve the response speed of the request.Reduce the average network load and reduce the impact of node failure on SWIM network performance.