Abstract: A system and method for detecting the presence of an RF device and determining a location of the RF device. The system includes a first antenna capable of transmitting a first radar signal and receiving RF signals, a second antenna capable of transmitting a second radar signal and receiving RF signals, where the second radar signal is offset in frequency from the first radar signal, and one or more processors. The one or more processors analyzes harmonic and intermodulation (IM) signals generated in response to the first radar signal and the second radar signal interacting with nonlinear characteristics in components of a RF device. The analyzing provides detection of the presence of the RF device and the determination of a location of the RF device regardless of whether the RF device is active or passive.