Design Of Air Intelligence Emergency Transmission System Based On Beidou Short Message

How to realize the reliable transmission of air intelligence is the premise to ensure the air and ground safety.However,due to the limitation of signal coverage area,the traditional communication mode can not achieve long-distance stable transmission,so it is of great significance to design an emergency air intelligence transmission system.The short message communication function of Beidou satellite navigation system independently developed by China has the advantages of full time and nationwide coverage,which is very suitable as a means of emergency communication.This paper designs an air intelligence emergency transmission system based on Beidou navigation system,and analyzes and studies the structure and composition of the transmission system.The main research results of this paper are as follows.(1)The radar network structure and communication protocol of the transmission system are designed.Due to the small communication capacity of short message,it is necessary to compress the data during the communication transmission,and decompress the data after receiving.At the same time,the air intelligence transmission system is that multiple radars transmit the data to a command system,so it is necessary to realize the identification of the sender in the command system.This paper first analyzes the structure of the transmission system,then designs the system communication protocol according to the system structure,and analyzes the flow of data processing algorithm,which lays the foundation for the design of data processing module.(2)The hardware module of the air information transmission system is designed.In order to realize the automation of data processing,the embedded system is used in the data processing module.In the embedded hardware system,STM32 series chips are selected as the central controller,and external circuits such as serial communication conversion circuit,power supply buck circuit are equipped to ensure that the hardware system can be connected with the Beidou system,early warning radar and command terminal.(3)The data transmission algorithm of the system is designed.The software algorithm of the data processing module is divided into two parts: the sender's data processing and the receiver's data processing.The former's main functions are data classification by batch,threat judgment and data compression,while the latter's main functions are data decompression and data upload.According to the difference between them,the corresponding software algorithm is designed.(4)The construction and verification of the system are completed.After the completion of the system design,the field test of the air information transmission system is carried out.Firstly,the reliability of Beidou short message communication is tested.Secondly,by connecting the system with radar and command terminal,the experimental results verify the correctness of the system design and the reliability of operation.