Fmcw radar with additional am for interference detection

A radar device comprising:

• a radio frequency (RF) oscillator configured to generate an RF oscillator signal that includes frequency-modulated chirps;
• a modulator configured to receive the RF oscillator signal and a modulation signal, and configured to amplitude-modulate the RF oscillator signal using the modulation signal to obtain an amplitude-modulated RF oscillator signal;
• one or more antennas configured to transmit the amplitude-modulated RF oscillator signal and to receive an RF signal including frequency-modulated chirp echo signals from a target object;
• a mixer configured to receive the RF oscillator signal and the RF signal, and configured to down-convert the RF signal into a base band and to provide a base band signal;
• an analog-to-digital converter configured to digitize the base band signal;
• and
• a computing unit configured to process the base band signal to detect information included in the modulation signal.