US Patent 9857453 High-frequency indicator phase system and method

A radar system includes a transmitter configured to generate a series of electromagnetic pulses, and a receiver configured to receive return signals reflected by an object of interest from the series of electromagnetic pulses. A phase processor is operatively connected to the output of the receiver and configured to extract phase data as a function of time from the received return signals, convert the extracted phase data to the frequency domain, and analyze the phase data to identify phase changes indicative of one or more types of motion, such as complex or simple dynamic motion of the object of interest.