Research On Wireless Interference Source Location Based On Gridded Spectrum Monitoring

In recent years,with the rapid development of radio communication technology in China,radio,as a kind of information carrier,plays an important role in the national economic construction and national defense construction increasingly.At present,with the growing number of radio transmitting apparatus,continuous improvement of spectral coverage density,further deterioration of the electromagnetic environment and the increasingly scarce limited radio spectrum resource,spectrum supervision becomes more and more important.Thus,it is imperative to make greater efforts to investigate and punish the source of interference or illegal radio stations in order to ensure the smooth communication.In this paper,the main study focuses on the localization of wireless interference sources which is based on the grid spectrum monitoring results.The main work includes:(1)In the two-dimensional free space,the radio propagation model is established based on a number of monitoring points by monitoring access to the received power size,solving the location of interference sources theoretically and verifing by simulation experiment.(2)A localization algorithm for wireless interference sources in the two-dimensional free space is proposed.We infer the specific location of interference source,which is verified by simulation experiment,through the establishment of a number of radio spectrum monitoring,using multiple monitoring points by monitoring access to receive power according to the size of the proposed localization in two-dimensional free space radio interference source algorithm.(3)A localization algorithm based on the grid spectrum monitoring results is proposed.In the area which Gauss white noise or Rayleigh noise is added,a radio monitoring network for monitoring the regional interference source signal strength,measuring the receiving power is constructed with a number of radio monitor permutation matrix.The interference source region is deduced through the analysis of the radio monitoring device for receiving power,the size of the radio monitoring data and the algorithm proposed in this paper,which is verified by the simulation results.(4)The proposed radio interference source localization algorithm based on grid monitoring results has been further improved which makes full use of each monitor monitoring data so as to improve the radio interference localization accuracy,and this paper verified by the simulation results.