The Fixed Monitoring Station (Small Station) Coverage Area Research Of Jilin Province

Radio frequency spectrum resource is a kind of special national strategic resources,each country government takes this seriously very much, throw many person, money,content, in order to continuously enhance the radio management and organizationconstruction, continuously strengthen the technology infrastructure and laws and regulationsconstruction, so as to promote the radio management work more adapt to the economicdevelopment and the global informationization advancing.As radio resource is a kind of limited natural resources, at the same time, space and thesame technology condition, using the same frequency radio transmission device between willinterfere with each other, the communication process will be hindered, therefore thescientific, effective management of radio spectrum resources, interference is excluded, themaintenance of normal use of the order′s radio management one of the important tasks ofinstitutions.Our country is big country radio equipment used in radio management, national heightto take seriously, established the longitudinal, transverse to the edge of the end of a completeradio management network, the radio administrative departments at all levels in theexclusion of radio interference, to ensure full use of spectrum resources plays an importantrole. These management mechanism through a monitoring station play its role, at present, theprovinces and cities to build hundreds of fixed radio monitoring station, most of which areUHF / VHF ultrashort wave monitoring station. As a result of ultrashort wave radio wavepropagation affected by terrain, ground objects and other effects of ultrashort wavemonitoring system is large, so the coverage analysis becomes the current levels of radiomanagement institutions need to study the important issue.The main content of this paper is the study of fixed monitoring stations covered. Firstly,through theoretical research methods on the ITU-R P.1546 model, Okumura-Hata model andcommunication model research and select suitable for local fixed monitoring coveragecalculation of propagation model, for the monitoring of coverage area and providetheoretical basis for the calculation of. Through the typical value calculation methods fordifferent types of radio coverage radius was calculated, and the special monitoring dataanalysis software and geographic information data in support of the Jilin province radio stations covered were calculated and assessed.According to the fixed point test results, can be considered in city and suburbenvironment (Okumura-Hata model of small and medium-sized city) and ITU-R P.1546model (10m model) simulation results and measured results are similar, the error value isless than 6dB. Should pay attention to is, without considering the building density under theinfluence of small and medium-sized city, Okumura-Hata model and the calculation resultsof the model is basically the same as in big city.Mobile measurement in multiple points. ITU-R P.1546 model (10m model) andOkumura-Hata model (small and medium-sized city model calculation results are almost).The terrain is more complex, ITU-R P.1546 model is more precise.This paper focuses on the research of the influence of antenna coverage. Through thisresearch, for the future of fixed monitoring station or small station site selection andmonitoring equipment system covering the area inspects the job to provide a theoretical basis,and data support.