The “Radio Frequency Monitoring Project” of ex-Directorate General of Telecommunications, Ministry of Transportation and Communications(ex-MOTC), established the monitoring energy technology of the relevant radio wave monitoring network and formed a 24/7, real-time and automatic nationwide radio wave power monitoring network via monitoring network and spectrum management system. In 2006, National Communications Committee (NCC) was organized, and set “Continuously Banning Illegal Channels in Accordance with The Law, and Actively Opening up Channels” as policy for solving problem of illegal radio stations. They used the Radio Wave Power Monitoring System of ex-MOTC to keep the order of radio wave. A new generation of radio monitoring systems have been built, with the aim of improving the future flight, shortness, low-power radio equipment and the special interference problems in metropolitan areas in 2018.
In recent years, the economy of Taiwan has been flourishing. A lot of buildings lead to rapid changing of surrounding terrain and increasing the difficulty of interference forbidden, coupled with the opening up of new businesses, a large number of spectrums are released. For this reason, this project intends to propose an interference detection system to identify the frequency bands suspected of interference in various services.
The final report of this project is organized as eight chapters: Chapter I is the introduction; Chapter II is collection and analysis of radio wave monitoring interference early warning methods; Chapter III is collection of monitoring data generated by the monitoring system; Chapter IV is interference calculation and monitoring data analysis; Chapter V is the interference cases study; Chapter VI is analysis and discussion on the causes of interference; Chapter VII analyzes the interference of airline channel communication by broadcasting channel signals; Chapter VIII is future improvement measures and early warning mechanism planning recommendations and conclusions of the radio wave monitoring system.
For the system aspect, we analyzed the radio wave detection data provided by NCC, and made analysis results visualized for conveniently observing the change of spectrum. For the theory aspect, we referred to previous relative project reports and relative books. We illustrated the factors of various interference, and explained factors and types of suspected interference frequency band based on the output images of proposed system. In chapter VII of this report, the expected benefits of this project are described, and the future prospects are put forward so that researchers in the future can have a clear research direction.
Keywords: Radio interference, Radio monitoring, Spectrum management system