Aspects of the invention provide an external interference radar that remedies such shortcomings by providing a hybrid approach that provides an initial spectrum analysis to identify known interferences. The signal is also divided into physical resource blocks (PRB) to better identify interferences that occur intermittently. Once these intermittent interferences are illustrated, a signal pattern detection algorithm is applied to the identified signals and may further accurately identify the intermittent interferences. As part of the identification, the radar further provides a report that identifies whether the interference is a permanent or intermittent; a type of the interference and the severity of the interference.