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Method, apparatus, and system for calculating atmospheric visibility and radar

A technology of atmospheric visibility and visibility, applied in the direction of measuring devices, radio wave measurement systems, climate sustainability, etc., can solve the problems of increasing the error rate of visibility values ​​and low matching degree of atmospheric extinction coefficient, so as to reduce the error rate and improve The effect of accuracy

Active Publication Date: 2018-03-16
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

[0004] However, the atmospheric extinction coefficient used in the visibility calculation formula is the extinction coefficient corresponding to the laser beam with a wavelength of 550nm. light beam, which in turn leads to a low match between the calculated atmospheric extinction coefficient and the existing visibility calculation formula, which increases the error rate of the visibility value

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  • Method, apparatus, and system for calculating atmospheric visibility and radar
  • Method, apparatus, and system for calculating atmospheric visibility and radar
  • Method, apparatus, and system for calculating atmospheric visibility and radar

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Embodiment Construction

[0077] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0078] The embodiment of the present invention discloses a calculation method of atmospheric visibility, please refer to the attached figure 1 , the method specifically includes the following steps:

[0079] S101: When receiving the echo signal, use the echo signal to obtain the detection power of the visibility lidar;

[0080] Specifically, in the process of using the visibility lidar to detect the visibility value of the atmosphere, the visibility lidar usu...

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Abstract

The application provides a method, apparatus, and system for calculating atmospheric visibility and a radar. When an initial atmospheric extinction coefficient is calculated, the initial atmospheric extinction coefficient is corrected by using an angstrom wavelength exponent that is obtained in advance from a sun photometer or a particle spectrometer and is able to reflect a relationship of changing of the atmospheric extinction coefficient with a laser beam wavelength and an initial atmospheric extinction coefficient corresponding to a laser beam of a visibility laser radar with the wavelength deviating from the 550-nm laser beam farther is converter, so that an atmospheric corrected extinction coefficient of the atmospheric extinction coefficient corresponding to a laser beam with an approximate 550-nm wavelength is obtained; and thus when the atmospheric corrected extinction coefficient is introduced into an existing visibility calculation formula to calculate a visibility value ofa detected region, high matching between the visibility calculation formula and the atmospheric corrected extinction coefficient is ensured, so that the error rate of the visibility value is reduced and the accuracy of the visibility value is improved.

Description

technical field [0001] The invention relates to the technical field of environmental monitoring, and more specifically relates to a calculation method, device, radar and system for atmospheric visibility. Background technique [0002] Visibility is an important physical quantity that characterizes the degree of air pollution near the surface. Its magnitude can directly reflect the environmental quality of an area. Therefore, the measurement of atmospheric visibility is closely related to people's daily life. [0003] At present, the commonly used means of measuring atmospheric visibility mainly use visibility measuring instruments to achieve accurate measurement of atmospheric visibility. Among them, visibility laser radar has become a more commonly used visibility measuring instrument due to its characteristics of multiple measurement directions and wide measurement range. A measuring instrument. The process of measuring atmospheric visibility by visibility lidar mainly in...

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Application Information

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IPC IPC(8): G01S17/95G01S7/48
CPCG01S7/4802G01S17/95Y02A90/10
Inventor 夏海云尚祥窦贤康上官明佳王冲裘家伟李蔓一
Owner UNIV OF SCI & TECH OF CHINA
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