Distance measuring method and laser radar

The invention discloses a distance measuring method and a laser radar, and belongs to the technical field of laser detection. The method comprises the following steps: controlling a laser radar to emit first laser at first light emitting power, and detecting a first echo obtained by reflecting the first laser by a target object according to first detection sensitivity; the laser radar is controlled to emit a second laser at a second light emitting power, a second echo obtained by reflecting the second laser by the target object is detected according to a second detection sensitivity, the first light emitting power is different from the second light emitting power, and/or the first detection sensitivity is different from the second detection sensitivity; and determining the distance to the target object based on the first echo and the second echo. By using different light emitting powers and/or detection sensitivities in the distance measurement process, the first echo and the second echo correspond to differe