Design Of An Airport Radio Monitoring Platform Based On USRP

Civil aviation radio dedicated frequencies are radio frequencies specifically allocated and allocated by the national radio regulatory agency for civil aviation communications,navigation,radar and other fields.The safety of civil aviation radio dedicated frequencies is very important for civil aviation aircraft,so it is necessary to conduct in-depth research on the civil aviation wireless spectrum monitoring system to cope with the emergency situation of civil aviation radio.In recent years,with the rapid development of wireless communication technology,new radio services and radio equipment have emerged endlessly.All kinds of sudden interference will worsen the electromagnetic environment and reduce the communication quality.If it occurs in the private radio frequency,it will threaten the lives and property of the country and people.Radio frequency spectrum monitoring for airports is an important means to solve the above two problems.Through effective monitoring,it can reduce the pollution of the electromagnetic environment and ensure the safety of radio frequency dedicated to civil aviation.The article introduces the concept of software radio.In order to monitor the airport and the surrounding radios to prevent interference and protect the safety of civil aviation,a spectrum designed for specific civil aviation frequencies based on USRP hardware peripherals and LabVIEW programs is designed.Monitoring platform.The platform has frequency sweep monitoring,FM,AM demodulation,interference direction finding and positioning functions.By analyzing and processing the actual received data,the feasibility of the system in the actual environment is verified.The application of software radio technology in communication and engineering at this stage has become more and more important.It has strong programmability,practicality and convenience,and it is bound to have important applications in the current and future communication systems.In the frequency sweep function,the specified frequency can be swept,and information such as frequency spectrum can be displayed on the host computer.Compare the received data with data from known airports and perform FM and AM demodulation to find suspicious signals.In the interference direction finding and positioning function,Brown's least squares triangle positioning algorithm is used to locate the received data.The experimental results show that the location of the interference source has higher accuracy and has certain practicability in actual radio monitoring.In short,the software radio method is used to realize the monitoring and interference location of radio signals around the airport,providing a theoretical basis and important technical means for studying radio monitoring and interference measurement in specific frequency bands of civil aviation.