Semiconductor laser radar visibility meter

Abstract

The invention discloses a semiconductor laser radar visibility meter which comprises a laser emission system, a receiving optical system, and a signal collecting and control system, and is characterized in that: the laser emission system comprises a semiconductor laser, a coupling lens, a first coupling optical fiber, a transmitter-telescope, and a flat mirror with reflection and transmission functions; the receiving optical system comprises a receiving telescope, a second coupling optical fiber, a photodetector, and an amplifier; the signal collecting and control system comprises an AD collecting card, a computer and a door control system; and the AD collecting card is connected with the computer by a stacked way. The visibility meter has small and convenient structure, strong applicability and simple operation, can measure horizontal and slant visibility data in real time, and provides reliable visibility information for the fields of meteorology, transportation, environmental protection and military and the like.

Description

technical field [0001] The invention relates to a visibility meter used in the fields of transportation, meteorology, environmental protection, military affairs and the like, in particular to the field of a semiconductor laser radar visibility meter. Background technique [0002] Visibility is a routine item in meteorological observation. It reflects the turbidity of the atmosphere. Low visibility conditions such as heavy fog will affect traffic safety and military operations. At present, the measurement of horizontal visibility has been relatively accurate, and relatively mature products include atmospheric transmissometers and so on. Since the vertical distribution of the atmosphere is not uniform, the atmospheric visibility will decrease with the increase of altitude. Therefore, the visibility in the squint direction will be quite different from the visibility measured horizontally. When there is surface fog, the horizontal visibility is very low and the slope visibility...

AI Technical Summary

Problems solved by technology

[0004] The problem to be solved by the present invention is to provide a semiconductor laser radar visibility meter. The system can quickly detect the horizontal and slope visibility, and the detection angle can be adjusted arbitrarily, which expands the detection range and functions, and the stable inversion iteration algorithm improves the detection efficiency. The speed and detection accuracy have overcome the shortcomings of the previous lidar visibility instrument, such as large volume, high cost, complicated use, and difficulty in popularization.

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