LASER RADAR DEVICE

PROBLEM TO BE SOLVED: To provide a laser radar device that can quickly and accurately determine something diffusive such as a mist as noise when such the something diffusive is present in a detection area and thus, can quickly and accurately detect a detection target.SOLUTION: A laser radar device 1 is configured to include arrival position detection means and determination means. The arrival position detection means calculates a rotation angle of a deflection part upon generating a laser beam and a lapse time until reflection light corresponding to the laser beam is detected by detection means since the laser beam has been generated and detects an arrival position of the laser beam in external space. Also, when a plurality of arrival positions of the laser beam are detected by the arrival position detection means at any of a plurality of rotation angles in one period of the deflection part, the determination means determines that a detection result of an arrival position at a forward position with respect to an arrival position at the very back position at the plurality of rotation angles results from noise other than the detection target.