GSM-R interference source automatic positioning device and method

The invention provides a GSM-R interference source automatic positioning device and method. The method comprises the following steps: receiving radio signals along a railway by using a uniform circular array antenna; the multi-channel receiver collects signals and outputs the signals to the real-time processing unit. The real-time processing unit receives the space-time positioning information, and obtains carrier frequency configuration information of a current cell through a basic database; spectral analysis is carried out on the collected signals, and adjacent channel interference, large signal blocking interference and intermodulation interference are identified in combination with time-space positioning information and current cell carrier frequency configuration information; estimating the configured carrier frequency by using an information source number estimation algorithm, and identifying multipath interference; performing direction finding on the identified interference by using a direction of arri