Patent ID: 9395434
Filing Date: 2016-07-19
CPC Classification: G01S

Claim Text:
1. A multitone nonlinear radar system comprising: a transmitter that transmits a signal comprising at least two predetermined frequency components of varying intensity and/or power; a receiver operating to receive return signals comprising harmonics of at least two predetermined frequencies, combinations of the at least two predetermined frequency components, and combinations of the harmonics of the at least two predetermined frequency components that are within a predetermined frequency range that has been predetermined to enable detection and/or classification of an electronic device; at least one antenna operating to transmit and receive electromagnetic radiation operatively connected to the transmitter and receiver; the receiver comprising at least one high pass filter for attenuating linear reflections at the two predetermined frequencies, and an analyzer configured to detect how the harmonics change with varying transmitted power; whereby electronic devices may be detected and identified based upon the rate of change of measured power or intensity of the return signal components and wherein amplitudes that are received at different transmit powers in effect provide a signature for the electronic device that enable classification as to the type of electronic device and whether or not the electronic device is designed to transmit and/or receive information.