Design of image scanning and sampling system for 3D laser radar

An active three dimension imaging laser a radar based on phase comparison technique, using an amplitude modulation cw laser diode source was established, its optical scanning system consisting of a nodding mirror and a 4-facet polygon rotor is analyzed in detail, 3D image sampling systems with real time range nonlinear calibration, light intensity-phase compensator and RS422 standard sending interface was realized. The 3D laser radar had demonstrated successfully and reliably in field test of autonomous land vehicle.