Radar detection and location of radio frequency (rf) devices

A method for detecting the presence of a radio frequency (RF) device, comprising:

• transmitting a radar signal by a radar system;
• detecting harmonic signals generated by an RF device in response to an interaction of the radar signal with nonlinear characteristics of the RF device, the harmonic signals being detected by a first channel and a second channel of the radar system;
• detecting intermodulation (IM) signals generated by the RF device by the first channel and the second channel of the radar system, in response to the radar signal;
• processing the detected harmonic signals in at least one of a first processor of the first channel and a second processor of the second channel of the radar system;
• processing the detected IM signals in at least one of the first processor of the first channel and the second processor of the second channel of the radar system, wherein the IM signals and the harmonic signals are processed to provide an analysis result;
• and
• determining the presence of the RF device based on the analysis result.

A method for determining a location of a radio frequency (RF) device comprising:

• transmitting a first radar signal by a first channel of a radar system and a second radar signal by a second channel of the radar system, the second radar signal being offset in frequency from the first radar signal;
• detecting harmonic signals generated in response to an interaction of the first radar signal and the second radar signal with the RF device, the harmonic signals being detected by at least one of the first channel of the radar system and the second channel of the radar system;
• detecting intermodulation (IM) signals generated in response to the interaction of the first radar signal and the second radar signal with nonlinear characteristics of the RF device, the IM signals being detected by at least one of the first channel and the second channel of the radar system;
• analyzing the detected harmonic signals by at least one of a first processor of the first channel and a second processor of the second channel of the radar system;
• analyzing the detected IM signals by at least one of the first processor of the first channel and the second processor of the second channel of the radar system;
• and
• determining a location of the presence of the RF device based on the analyzing of at least the IM signals.