Patent ID: 6573982
Filing Date: 2003-06-03
Classification: G01S

Abstract:
A frequency jitter-compensating laser radar system comprising:a transmitter laser which emits an optical carrier beam at approximately a pre-established or center frequency; a means to frequency modulate the optical carrier beam to provide a simultaneously up- and down-chirped frequency modulated transmitter light beam; transmit/receive means to transmit the modulated light beam toward a target for scanning thereof and to receive a reflected return beam for each pixel location of a radar system; a local oscillator laser which emits a laser beam for combining with the reflected return beam to form a combined beam; detector means which detects the combined light beam and creates a resultant electrical signal representing the combined beam; means to split the resultant electrical signal into channels representing the up- and down-chirped frequency modulated electrical signals; and means receiving the two channels and compressing the up- and down-chirped electrical signals for use as the return signals from the radar for further processing analysis.