Double-base-line transmissometer for atmospheric visibility

Abstract

The invention provides a double-base-line transmissometer for the atmospheric visibility, which can be used for measuring the atmospheric visibility. The double-base-line transmissometer is simple in structure and mainly comprises a collimation transmitter device, a receiver device, an upper computer and combined power supplying equipment, wherein the receiver device comprises a first receiving machine and a second receiving machine. According to the double-base-line transmissometer, one collimation transmitter and the two receiving machines are adopted to form two measuring base lines so as to carry out extinction calculation; and compared with the single-base-line transmissometer for the visibility, the double-base-line transmissometer provided by the invention has the advantages that the system error caused by stains on the optical surface can be eliminated, the measuring accuracy of the transmissometer can be improved, and the stability of long-time measurement of the transmissometer is guaranteed, so that the double-base-line transmissometer is especially suitable for long-term work under the severe environments such as fields and open air.

Description

technical field [0001] The invention belongs to the technical field of atmospheric detection and relates to a transmission visibility measuring instrument capable of eliminating system errors. Background technique [0002] Visibility refers to the distance at which people with normal eyesight can recognize and identify objects. It is a physical quantity that uses distance to describe the degree of transparency (or turbidity) of the atmosphere. Visibility is not only used in meteorological observation departments, but also widely used in aviation, navigation, highway, military and environmental monitoring and other fields. In the field of transportation, especially in air transportation, visibility directly reflects the pilot's visual range, determines whether the plane can take off or land normally, and is one of the important meteorological elements to ensure flight safety; in the field of environmental monitoring, visibility is also It is the first direct reflection of pe...

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is: to overcome the deficiency of the single-baseline visibility projector, to provide a dual-baseline atmospheric visibility transmissometer, to solve the problem that the single-baseline transmissometer cannot work in harsh environments such as the open air for a long time, and to increase the transmissometer Excellent measurement accuracy and long-term measurement stability

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