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A Step-by-Level Line Aggregation Rainfall Data Scale Transformation Method

A technology for rainfall data and scale conversion, applied in data processing applications, electrical digital data processing, special data processing applications, etc., can solve the problems of data having no practical value and models that cannot be directly applied

Active Publication Date: 2021-07-06
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the rainfall obtained by microwave link monitoring is in the form of line aggregation, that is, the non-linear weighted average of the rainfall intensity passing through the link, which conceals the real point monitoring information and makes the collected data useless; On the other hand, the input of existing models is mostly point data, and the modeling assumption in the form of line aggregation has no physical meaning, so theoretically it cannot be directly applied to the model

Method used

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  • A Step-by-Level Line Aggregation Rainfall Data Scale Transformation Method
  • A Step-by-Level Line Aggregation Rainfall Data Scale Transformation Method
  • A Step-by-Level Line Aggregation Rainfall Data Scale Transformation Method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1: The lowest level is the case of a non-level 1 link.

[0044] In the first step, the site control range l is given;

[0045] In the second step, the length L of each link is divided by the control range l and rounded to obtain the level of each link, such as figure 1 Shown can be cut with a circle of radius l, in the appendix figure 1 Among them, the lengths of the 6 links are divided by 1, and 3 2-level links, 2 3-level links, and 1 6-level link are obtained;

[0046] The third step is to discretize the links according to the classification results, divide the links equally according to the link level, and take the center point of each segment link after equal division as the virtual rainfall station, as shown in figure 1 As shown, the level 3 link is divided into 3 equal parts, and the focus of the segment is the virtual site;

[0047] The fourth step is to determine the initial site location and valuation. Since there is no level 1 link, the middle p...

Embodiment 2

[0063] Embodiment 2: The lowest level is a level 1 link situation.

[0064] If there are level 1 links that meet the quantity requirements, then:

[0065] In the first step, the site control range l is given;

[0066] In the second step, the length L of each link is divided by the control range l and rounded to obtain the level of each link;

[0067] The third step is to discretize the links according to the classification results, divide the links equally according to the link level, and take the center point of each segment link after equal division as the virtual rainfall station;

[0068] The fourth step is to determine the initial site location and valuation. Since the lowest level is level 1, the center points of all level 1 links are taken as the initial site location, the aggregated data of each link line at this level is the definite site estimate, and the value of the initial site is the final estimate of the level site;

[0069] The fifth step is the preliminary ...

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Abstract

The invention discloses a step-by-step line aggregation rainfall data scale conversion method, comprising the following steps: given station control range l ; According to the microwave network i The length of a microwave link L i on the first i According to the classification results, the link is discretized, and the link is equally divided according to the link level, and the center point of each segmented link after equal division is taken as the virtual rainfall station; the initial station position, Valuation determination; preliminary valuation of the lowest-level virtual site without valuation; iterative optimization of the links obtained from the preliminary valuation; entering the next level of link calculation, and repeating until the calculation of all levels of links is completed. The concept of hierarchical and step-by-step optimization proposed by the present invention can effectively avoid the problem that all links fall into the local optimal solution; step-by-step optimization can effectively reduce the impact of large errors in long-link line aggregation data on the conversion process. While ensuring the convergence speed of the algorithm, the accuracy of the conversion result is improved.

Description

technical field [0001] The invention relates to a step-by-step line aggregation rainfall data scale conversion method, which belongs to the field of meteorological data processing. Background technique [0002] Regional rainfall monitoring using ground microwave communication network is a new emerging technology in recent years. Compared with traditional technology, this technology has many advantages such as saving construction cost, covering a wide area, and having a high degree of refinement. However, the rainfall obtained by microwave link monitoring is in the form of line aggregation, that is, the non-linear weighted average of the rainfall intensity passing through the link, which conceals the real point monitoring information and makes the collected data useless; On the other hand, the input of existing models is mostly point data, and the modeling assumption in the form of line aggregation has no physical meaning, so theoretically it cannot be directly applied to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/00G06Q10/04G06Q50/26
Inventor 郑鑫杨涛陈志远洪岱师鹏飞秦友伟
Owner HOHAI UNIV
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