Research On Coding Rules And Visualization Of Aeronautical Elements Based On AIXM

The aeronautical information exchange model(AIXM)is the key technology for the transition from aeronautical information services(AIS)to aeronautical information management(AIM).With the further development of civil Aeronautical informatization,China is also constructing the Civil Aeronautical Modern Air Traffic Management System(CAAMS),which establishes the China Civil Aeronautical Information Database and the Global Aeronautical Information Database based on the aeronautical information exchange model(AIXM)provides digital aeronautical data and information for the CAAMS,and has become an important boost to promote the construction of China Civil Aeronautical System Information Management(SWIM).Therefore,a comprehensive and in-depth study of AIXM-based aeronautical element coding rules and application technology will lay the foundation for the construction of China Civil Aeronautical Information Database,and further for the integrated construction of information systems under the AIM system such as aeronautical information database(IAID),electronic terrain and obstacle database(eTOD),and geographic information database(GISDB)and so on.This study is mainly focused on the two aspects of AIXM-based aeronautical element coding rules and visualization application technology.In terms of coding rules,firstly analyzed the basic model of AIXM,namely the aeronautical information conceptual model(AICM),and sorted out the basic modeling rules and characteristics of aeronautical element entities,attributes and relationships;secondly researched the mapping rules from AICM to AIXM,which is proposed by ICAO.With the support of the mapping rules and based on the definition of extended attributes,this thesis studied the localization coding rules of aeronautical elements.At the same time,during the research process,it was found that the aeronautical element code formed according to the ICAO coding rules takes up too much storage space and is not conducive to the transmission of aeronautical information data.Therefore,this research further analyzed the feasibility of compressing the AIXM code and validated it with an effective compression algorithm.In the aeronautical element visualization method,the data was first decomposed and read according to the runway class AIXM aeronautical elements,and DOM technology and MATLAB technology were used to visualize the runway aeronautical data in relative space.this paper further considered the research of aeronautical data decomposition and reading in terrain space.This study uses The xmlbox technology and google Earth technology to visualize the airspace-type aeronautical data combined with terrain,contrasted the visualization technology of the above two aeronautical elements,and formed a technical flowchart.