The invention provides a vehicle-mounted impulse type
laser radar system. The vehicle-mounted impulse type
laser radar system comprises a
laser transmitting circuit, three receiving circuits, three timing circuits and a processor. The laser transmitting circuit comprises a
laser transmitter, a
driving circuit of the
laser transmitter, a spectroscope, a transmitting circuit photoelectric
detector and an optical
system. Each receiving circuit comprises an
optical instrument, three converging lenses, three receiving circuit photoelectric detectors, and a
signal conditioning circuit composed of two-stage amplifying circuits, filtering circuits and time discriminating circuits. The processor is electrically connected with the
driving circuit and the three timing circuits and works out the distance between an obstacle in front of a vehicle and the vehicle and the direction of the obstacle according to the recorded laser
flight time. According to the vehicle-mounted laser
radar system of a three-path timing structure, within the range of 10 m in front of the vehicle, the distance between the obstacle in front of the target vehicle and the target vehicle can be accurately measured, and the direction of the obstacle in front of the target vehicle can be detected as well.