Abstract: In wireless communication,interference sources have become a huge concern recently．How to search and eliminate precisely is very important so as to restore the network communication for radio monitoring department．In this paper,we took a rounded study on the interference source localization problem in radio monitoring．First introduced two existent localization algorithms,Brown Least-square Triangle Localization and Virtual Force Iterative Localization．Then presented an algorithm,the localization algorithm which is based on azimuth angle and network topology．We compared the localization accuracy with three interference source localization algorithms through simulation and experiments,and found that the localization algorithm which is based on azimuth angle and network topology has higher accuracy in the actual interference source localization.

Key words: Interference source,Localization,Radio monitoring,Azimuth angle,Network topology