Measurement method and monitoring system of atmosphere vertical visibility

A measurement method and visibility technology, which are applied in the field of atmospheric vertical visibility measurement and monitoring systems, and can solve problems such as failure of the relationship between visibility and extinction coefficient, difficulty in observation, and uncertainty in observation results.

Inactive Publication Date: 2015-08-05
NANJING UNIV OF INFORMATION SCI & TECH
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Problems solved by technology

However, these methods have limitations for measuring vertical visibility
Nowadays, it is still very difficult to observe the vertical visibility. Firstly, the vertical visibility is observed manually without a specific target reference object, which brings difficulties to the observation, and the observation results are uncertain.
Secondly, the aerosol is not uniform in the vertical direction, which leads to the failure of the relationship between visibility and extinction coefficient, that is, the relational expression is not applicable to the calculation of vertical visibility
In addition,

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  • Measurement method and monitoring system of atmosphere vertical visibility
  • Measurement method and monitoring system of atmosphere vertical visibility

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0026] Such as figure 2 As shown, the atmospheric vertical visibility monitoring system of the present invention includes a computer, a forward scattering visibility meter and a laser ceilometer. The computer is respectively connected with the forward scattering visibility meter and the laser ceilometer.

[0027] Such as figure 1 Shown, the present invention is as follows to the mensuration step of atmospheric vertical visibility:

[0028] a. Visibility V1 is measured by forward scattering visibility meter (forward scattering visibility meter emits laser light into the atmosphere, scatters the laser light and suspended particles and receives the transmitted light pulse, and gathers them on the receiving surface of the silicon photoelectric sensor On, the optical signal is converted into an electrical signal, sent to the controller for processing, and then th...

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Abstract

The invention discloses a measurement method and a monitoring system of atmosphere vertical visibility. In the measurement method, by means of a new relationship of extinction coefficient to visibility, which is established through a laser cloud height instrument and a visibility instrument, an influence on the vertical visibility due to difference of the relationship of the extinction coefficient to the visibility since the micro-physical characters of atmospheric aerosol particles are different can be overcome, so that the atmosphere vertical visibility can be measured more definitely and can be applied in various environments. The monitoring system can achieve monitoring of the atmosphere vertical visibility in real time in all weather in an unmanned unattended operation manner.

Description

technical field [0001] The invention relates to a measuring method and a monitoring system for atmospheric vertical visibility. Background technique [0002] Visibility is an important element of meteorological observation. With the development of science and technology and economy in the world, aerospace, sea and land transportation, environmental monitoring and defense departments have higher and higher requirements for accurate forecasting of visibility. Therefore, the development and application of visibility measuring instruments are even more important. Since Koschmieder established the basic theory of visibility measurement in 1924, many experts at home and abroad have devoted themselves to the development of visibility measurement instruments. Over the past few decades, both in theory and in practice, visibility measurement instruments and theories have become increasingly mature. With the popularity of computers and the promotion of integrated circuits, visibi...

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Application Information

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IPC IPC(8): G01N21/53
Inventor 卜令兵丘祖京侯玉云袁静郜海阳
Owner NANJING UNIV OF INFORMATION SCI & TECH
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