Laser visibility meter

Abstract

The invention relates to a laser visibility meter, which comprises a laser transmitting unit, a receiving unit and a signal acquiring and controlling unit, wherein the laser transmitting unit is composed of a laser, a transmitting telescope and a beam splitter, the receiving unit is composed of a receiving telescope and a filter, the signal acquiring and controlling unit is composed of a first photoelectric detector, a second photoelectric and an embedded computer, which are used for receiving laser signals, the front end of the transmitting telescope is provided with the beam splitter, the focal plane of the transmitting telescope is provided with the first photoelectric detector, the front end of the receiving telescope is provided with the filter, and the second photoelectric detector is arranged at the focal point of the receiving telescope. The laser visibility meter provided in the invention has the advantages of small volume, light weight, a compact structure, convenience in usage, a wide application scope, no need for cooperation targets, capability of adjusting metering angles at will and realizing visibility measurement in horizontal and slant ranges, low cost and convenience in operation and usage.

Description

technical field [0001] The invention relates to the technical field of laser equipment, in particular to a laser visibility meter. Background technique [0002] Visibility is an important atmospheric parameter, which reflects the degree of atmospheric turbidity and is affected by meteorological factors such as fog, haze, and stratus clouds, as well as atmospheric aerosol particles such as smoke, polluted gases, and dust in the atmosphere. Visibility, especially the slant path visibility, determines whether the aircraft can successfully land, because the horizontal visibility of the runway is often very different from the slant visibility at the decision altitude when the aircraft lands. When there is surface fog, the horizontal visibility on the surface is very low and the slope visibility is high, judging from the horizontal visibility, the plane may not be able to land normally, or even cause the airport to be closed; At this time, judging by the horizontal visibility, it...

AI Technical Summary

Problems solved by technology

When there is surface fog, the horizontal visibility on the surface is very low and the slope visibility is high, judging from the horizontal visibility, the plane may not be able to land normally, or even cause the airport to be closed; low, judging by the horizontal visibility at this time will bring danger to the aircraft landing

[0003] Therefore, the development of visibility measuring instruments for measuring slant visibility is of great significance for improving aviation safety. Most of the existing airport visibility measuring instruments can only measure the visibility at a certain place on the ground surface, and cannot give accurate slant visibility or a considerable distance. Visibility information at a distance (such as hundreds of meters to several kilometers), and the volume is large, inconvenient to move, and the cost is relatively high

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