Raindrop spectrum inversion method and system

A raindrop spectrum and inversion technology, applied in the field of raindrop spectrum inversion, can solve the problems of estimation deviation of particle falling end velocity, affecting MRR inversion of raindrop spectrum, limited application of MRR, etc., and achieve the effect of improving accuracy.

Active Publication Date: 2021-05-28
北京城市气象研究院
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Problems solved by technology

However, due to the influence of vertical airflow on MRR, the estimation of particle falling velocity is biased, which affects the accuracy of MRR inve

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  • Raindrop spectrum inversion method and system
  • Raindrop spectrum inversion method and system
  • Raindrop spectrum inversion method and system

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[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0024] A schematic diagram of a layer structure according to an embodiment of the invention is shown in the drawing. The figures are not drawn to scale, with certain details exaggerated and possibly omitted for clarity. The shapes of the various regions and layers shown in the figure, as well as their relative sizes and positional relationships are only exemplary, and may deviate due to manufacturing tolerances or technical

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Abstract

The invention discloses a raindrop spectrum inversion method and system, wherein the method comprises the steps: carrying out denoising of a Doppler spectrum, and obtaining a rainfall signal spectrum; performing de-folding processing on the rainfall signal spectrum to obtain a de-folded rainfall signal spectrum; performing vertical airflow correction processing on the de-folded rainfall signal spectrum to obtain a rainfall velocity spectrum; and carrying out inversion on the rainfall velocity spectrum to obtain a raindrop spectrum. According to the raindrop spectrum inversion method, calculation is carried out according to the actually observed raindrop spectrum, a raindrop spectrum distribution function model does not need to be assumed in advance, dependence on any empirical relation is avoided, the situation that the MRR can only be used for measuring stratified cloud rainfall with small vertical airflow is overcome, and the DSD accuracy of MRR inversion of natural rainfall is improved.

Description

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Claims

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Application Information

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Owner 北京城市气象研究院
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