Design And Implementation Of Beidou New Space-Time Security System Platform

At present,the importance of building new infrastructure services for space-time information and positioning navigation is increasing.Building a comprehensive space-time information fusion management and application support platform based on Beidou and realizing the deep organic integration of Beidou and various applications are major strategic plans for the development of Beidou applications in China.However,the lack of protocol compatibility,low concurrency and poor security are the bottlenecks restricting the application development of Beidou fusion platform.It is urgent to further study the multi-compatibility,high concurrency and high security of the platform.Therefore,this paper breaks through the heterogeneous communication gateway and transmission encryption and decryption in the Beidou Internet of Things platform,builds a Beidou new space-time security IoT system platform,and conducts in-depth research on vehicle hardware and software terminals and database storage optimization.The innovative work of this paper is as follows.(1)Based on the study of the four Beidou positioning terminal protocols of JT/T808,Gumi,Tianqin and T-JSATL12,the data link format of JGTT fusion protocol is proposed for the extraction and fusion of key information of each protocol,which provides theoretical support for the realization of encryption and decryption methods.(2)Aiming at the security requirements of the network transmission information process,a Beidou new space-time data security encryption method suitable for the fusion protocol is proposed,which abstracts the specific terminal information and generates the specific key of the terminal.The research results show that the security of network information transmission process is improved by carrying out specific key encryption authentication for the upload data packets of the IOT terminal.(3)According to the requirements of spatio-temporal data storage and call performance optimization,a new spatio-temporal data cache processing mechanism is proposed.For the location data uploaded by the IOT terminal,Redis database cache is used to store the historical location data permanently in MySQL database.The research results show that the operation of the new cache processing mechanism optimzes the call performance of the remote client,and the improvement effect is up to twice.The work carried out in engineering test and verification is as follows:(1)The heterogeneous communication gateway group based on Netty framework is built,and the problem of low protocol compatibility and high terminal data parsing delay is solved by using the protocol header decision analysis method.(2)Aiming at the data transmission format under the fusion protocol,the vehicle hardware and software simulation terminal is built,which provides data sources for the functional verification and performance evaluation of the Beidou new space-time security IOT system platform.(3)In terms of functional verification and performance evaluation,based on Jmeter and apache abtest platform,the heterogeneous gateway function,remote client call delay and adding cache mechanism to improve the performance of Beidou new space-time security IoT platform are tested,which verifies that the platform meets the actual needs.