Remote laser ranging method and device

Abstract

The invention discloses a remote laser ranging method and device; a laser ranging controller controls a laser emitter to emit a laser pulse to a to-be-measured object, and forms a timing start signalin the same time; the laser pulse reaches the to-be-measured object via an atmosphere channel, so the to-be-measured object device can reflect the laser pulse, and the reflected laser pulse arrives ata small visual field laser receiver via the atmosphere channel; the laser receiver receives the reflected laser pulse, the reflected laser pulse passes spatial filtering, time filtering and spectrumfiltering, and reaches a photoelectric detector with an extremely high sensitivity; the photoelectric detector forms a return light electric pulse via photoelectric conversion, and the pulse serves asa timing end signal; the laser ranging controller calculates to obtain the distance information according to the timing start and end signals. The method and device can solve the technical problems that an existing laser pulse ranging method is low in a ranging distance.

Description

technical field [0001] The invention relates to the field of distance measurement, in particular to a remote distance measurement method and equipment. Background technique [0002] At present, the distance of passive detection equipment in the photoelectric detection system is much larger than that of laser ranging, which leads to the lack of distance dimension information when detecting long-distance targets. The detection distance of laser ranging needs to be improved urgently. [0003] In order to increase the laser ranging distance, the methods that can be adopted include increasing the atmospheric transmittance, increasing the output energy of the laser, increasing the receiving aperture of the laser receiving device, improving the optical efficiency of the laser emitting and receiving device, and improving the sensitivity of the photodetector. and other means. [0004] Among them, the atmospheric transmittance is determined by external conditions, not by the laser r...

AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present invention provides a remote distance measurement method and equipment, which are used to solve the technical problem of the detection distance being too short in the distance measurement process in the prior art, so as to achieve the technical effect of improving the distance measurement range