Design And Implementation Of Satellite Telemetry Data Processing System Based On XML Technology

With the rapid development of China's aerospace industry,more and more satellites have been put into various research and application fields,and have had a great impact.Space satellite engineering includes six systems: satellite system,launch vehicle system,launch site system,measurement and control system,ground operation and control system and application system.Ground operation and control system plays an important role as control center.In the construction of ground operation and control system,the construction of telemetry related system has very important engineering significance.How to better solve the problem of telemetry? The problems of data storage,analysis,display and analysis play a key role in the good operation of the whole satellite project.The telemetry related system of ground operation and control system is mainly responsible for receiving the original satellite telemetry data transmitted by the measurement and control system,interpreting and verifying the source and format of the original satellite telemetry data,completing cataloguing and storage,and analyzing the original satellite telemetry data according to the design methods of satellite mission telemetry,forming visual processing results,assisting in realizing the operation status and the satellite platform.The working state of the load is monitored continuously,and the results of parameter processing are stored to provide support for subsequent data analysis.In satellite telemetry data processing system,the most complicated task is to understand and translate different telemetry format agreements for different satellite missions.There are different ways of satellite telemetry format agreements formed by existing satellite development sites in China.These different telemetry format descriptions result in the development of actual satellite telemetry data processing system.In the process of developing different satellite missions,a great deal of understanding differences and software identification problems,while bringing a lot of coding work,lack of inheritance and compatibility.Therefore,it is urgent to design and implement a standard specification with high generalization for describing telemetry format conventions of different satellite missions in a unified form and standard.The satellite telemetry data processing system based on XML technology described in this paper adopts a concise and efficient platform architecture,and takes XML technology as the key means to realize the engineering processing of telemetry data.XML language has the characteristics of data display diversity,granular update,upgrade,compression and so on.Based on the above characteristics of XML technology,a set of standard specifications with hierarchical structure and good robustness is designed and implemented in the satellite telemetry processing system as the data information standard,uniformly defining the description methods of various telemetry formats in different satellite missions,forming a set of XML description files with high availability,high readability and high reusability,in order to improve the new research telemetry data.The development efficiency of the processing system can be shortened,and the repetitive coding work can be reduced in the development work,so as to avoid the recognition errors of the related content of the telemetry format stipulated by the system in different telemetry missions,thus laying a technical foundation for the unification of the satellite telemetry data processing system in various satellite missions.In this paper,the requirements of satellite telemetry data processing system are analyzed in detail,the functional components of the system are planned,designed and implemented,and the standard specification design and application of satellite telemetry format agreement based on XML technology are completed.The system architecture design,system component design,component interface design,database design and the coding process of the system through C#.Net are discussed in detail.The software testing process analysis is discussed in one step.The above contents have been embodied and validated in engineering application.Finally,the paper is summarized and the further research direction of satellite telemetry data processing system is discussed.