Design And Implementation Of Integrated Monitoring Remote Control System For Non-directional Beacon Station

Non-Directional Beacon（NDB）station as the ground signal base station of aviation radio navigation,the signal cover a large area of Chinese airspace and territorial waters.NDB is widely used in military flight navigation because of its good covert navigation characteristics and low altitude performance.The traditional NDB station was put into operation early,the equipment intelligence is low,especially lack of remote monitoring and response ability.The construction location of the NDB station is limited by geographical factors,showing the characteristics of "the construction location deviates from the center,the personnel on duty are dispersed,and the information management is not centralized".These unfavorable factors lead to a large resource consumption in coordinating military navigation tasks.On the one hand,the timeliness of aircraft flight navigation tasks is very strong,especially for military training or combat tasks,and ground navigation support cannot be compromised.However,the construction status of traditional NDB station is characterized by low fault tolerance and redundancy.For example,when the electric power environment of the station is damaged,the navigation task will be blocked immediately,or when the main equipment of the transmitter is faulty,the switch of standby equipment is subject to more on-site intervention by the personnel on duty.Secondly,the decentralized distribution of off-center stations causes problems in information collection and management.The NDB station lacking remote response capability is characterized by high cost and difficulty in operation and maintenance.In order to promote the construction of unattended and intelligent stations,the integrated monitoring and remote control system of NDB stations is designed and developed.In this thesis,combined with the current operation of the NDB station of an air Force unit,the monitoring and control of the NDB system from the remote operation and maintenance terminal is realized through the design of the antenna feeder system and the design of the transmitter communication control scheme.The Internet of things and sensor technology are used to ensure the operation and maintenance of the application equipment of the NDB station.The remote monitoring and control of the NDB station of the army is completed with the system modules of uninterrupted remote power control,ambient temperature and humidity monitoring,and security alarm around the station as the core content.The main contents of this thesis include the following four aspects:Firstly,the relevant technologies of NDB system are studied,and the operation of the station system at present is analyzed.The second is the hardware scheme design for the integrated monitoring remote control system of NDB station.Research and development of the system content in a modular way,the linkage switch module of the antenna feeder system application is designed,and the position detection circuit based on the linkage of the mechanism is proposed.In order to ensure the operation and maintenance of the station,an uninterrupted remote power supply system and intelligent security module are designed.Third,develop the system software platform and conduct system testing and cloud deployment.The software architecture is based on the MVC architecture of front and back end separation,and the system development is completed by using Spring Boot,Vue,Redis and other technology stacks.The system was deployed and tested based on the network architecture of edge cloud collaboration,and the test results met the system requirements.