An all-fiber laser radar visibility meter

Abstract

The invention provides a full-optical-fiber laser radar visibility meter. A coupling lens is arranged at the position of an outlet in a laser, the sending end of a Y-type receiving and sending one-piece type optical fiber bundle is arranged at the focal point position of the coupling lens, the common end of the Y-type receiving and sending one-piece type optical fiber bundle is arranged at the focal point position of a primary mirror of a telescope, the receiving end of the Y-type receiving and sending one-piece type optical fiber bundle is connected with a photoelectric detector, and a signal acquisition and control module is connected with the photoelectric detector. The full-optical-fiber laser radar visibility meter is small in size, light in weight, and more compact in structure, the Y-type receiving and sending one-piece type optical fiber bundle structure removes the influences of geometric overlap factors, and adjustment and the installation of the meter are facilitated.

Description

technical field [0001] The invention relates to the technical field of visibility meters, in particular to an all-fiber laser radar visibility meter. Background technique [0002] Visibility is an important parameter to reflect the degree of atmospheric turbidity, specifically expressed as the visibility distance of the target, that is, the maximum distance at which the target can be distinguished from the background when the target is observed. As an instrument for measuring visibility information, visibility meters are widely used in meteorology, traffic, environmental monitoring and other fields. [0003] Most of the current visibility meters are transmissive and forward-scattering, which are large in size and complicated in installation process, and can only obtain visibility in the horizontal direction. In the case of uneven fog, local rain or snowstorm, the instrument’s Readings can easily be misleading. Moreover, its measurement sampling space is small, and it can o...

AI Technical Summary

Problems solved by technology

[0003] Most of the current visibility meters are transmissive and forward-scattering, which are large in size and complicated in installation process, and can only obtain visibility in the horizontal direction. In the case of uneven fog, local rain or snowstorm, the instrument’s Readings can be very misleading

Moreover, its measurement sampling space is small, and it can only reflect the visibility information of small areas, and cannot make accurate and timely reflections on weather phenomena such as group fog that seriously affect traffic safety.

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