Abstract: A laser radar device includes: a light source unit that outputs a plurality of intensity modulation pulses by periodically intensity-modulating laser light using intensity modulation signals having different frequencies; a telescope that transmits the plurality of intensity modulation pulses to a target and receives reflected light from the target as reception light; a light receiving unit that generates a reception electrical signal by photoelectrically converting the reception light; and a signal processing unit that calculates a distance and a physical property parameter of the target on the basis of the reception electrical signal.

Abstract: A signal processing device calculates, as a moving speed of each of a plurality of observation targets, a relative speed of each of the targets with respect to a lidar device. A plurality of light pulses having different frequencies from each other are generated, each of the light pulses radiated and then scattered by each of the targets is received, and multiplexed light of each of the scattered light and the laser beam is detected. The signal processing device includes: a Doppler frequency calculating unit to calculate a Doppler frequency in a frequency of each of the scattered light and due to movement of each of the targets from the frequencies of the plurality of generated light pulses and a detection signal of each of the multiplexed light; and a speed calculating unit to calculate a relative speed of each of the targets from each of the Doppler frequency.