Measurement method and monitoring system of atmosphere vertical visibility

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...

AI Technical Summary

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, experiments have shown that due to the different types of ground aerosols, their optical properties are also very different, resulting in an unstable relationship between aerosol extinction and visibility, which increases the difficulty of vertical visibility detection

[0005] The laser ceilometer is an automatic cloud observation device based on the principle of laser radar. It can obtain the extinction coefficient at different heights to obtain the vertical visibility of the atmosphere. Effects of Different Relationships Between Extinction Coefficient and Visibility on Vertical Visibility

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