Improved localization processing for an unmanned aerial vehicle is provided.
The foregoing problem is solved by a localization device for an unmanned aerial vehicle including a light source for irradiating a target object around the unmanned aerial vehicle, a light-collecting sensor for acquiring reflected light from the target object as image data, and a localization unit for estimating a relative position of the unmanned aerial vehicle to the target object using the image data acquired by the light-collecting sensor, wherein the light source includes a laser for emitting light distinguishable from ambient light, and a diffuser for diffusing the light from the laser, and the light-collecting sensor is configured to sense light distinguishable from ambient light with respect to reflected light from the target object.