Design And Implementation Of A Navigation Earth Station Monitoring Software

The Navigation Earth Station is the key component of satellite navigation signal field test and satellite-ground integrated verification system.The Navigation Earth Station generates navigation signals and transmits to communication satellites in orbit.At the same time,it receives the downlink signal from the communication satellite for closed-loop measuring,completes the precise ranging of the satellite-to-earth link and real-time adjustment of the navigation signal parameters,and implementes the communication satellite platform to broadcast the navigation signals.The Navigation Earth Station Monitoring Software is the key software for complete the data interaction between the equipment in the station and the superior control system.The monitoring software automatically manages and controls equipment's status detection,alarm location,parameter setting,power amplifier switch machine,etc.Through the cooperation of test channels and test instruments,the channel delay of the earth station can be measured automatically,the monitoring software can also receive and excuses the control commands from the management&control system,and then report the results and data,to complete the automatic operation and remote management of the navigation earth station.The main results are as follows(1)For the integrated monitoring requirements of Navigation Earth Station with all kinds of equipment configuration,the unified design and distributed deployment mode are adopted to realize the standardized monitoring of all station devices by different configuration information.(2)For the requirements of equipment monitoring,mission operation and test tasks,the characteristics of navigation earth station are refined.The core functions of Navigation Earth Station,such as channel delay test,are decomposed and designed.Through UML Entity-Relation Diagram modeling,the requirement analysis of monitoring software are completed(3)According to the requirements of software distributed deployment,the frameworks characteristics of navigation earth station are refined,and design of monitoring software based on C/S structure is completed.The outline design of the software is completed by the Class Diagram and Sequence Diagram in UML.The functional modules include System Login,Device Communication,Device Monitor and Control,Remote Monitor and Control,Macro Manag,Delay Test,Main Form,Database and so on.and the software function is implemente d by Visual Studio and C #.(4)The software test cases are designed,and the operational devices are used to complete the configuration item test and regression test.The results show that the function and performance of the monitoring software meet the design requirements.According to the results of operation verification,the Navigation Earth Station Monitoring Software is reasonable design and stable operation,which supports the space-ground integration test of new satellite navigation methods,new systems,and new technologies.