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Spatial Interpolation Method of Rainfall Based on Optimal Normal Distribution Weighting

A technology of normal distribution and spatial interpolation, applied in the field of geographic science, which can solve problems such as slow operation speed

Inactive Publication Date: 2018-01-05
BEIJING NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method can produce more natural spatial distribution results, but the operation speed is slower

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  • Spatial Interpolation Method of Rainfall Based on Optimal Normal Distribution Weighting
  • Spatial Interpolation Method of Rainfall Based on Optimal Normal Distribution Weighting
  • Spatial Interpolation Method of Rainfall Based on Optimal Normal Distribution Weighting

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[0081] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0082] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are to distinguish two entities with the same name but different parameters or parameters that are not the same, see "first" and "second" It is only for the convenience of expression, and should not be construed as a limitation on the embodiments of the present invention, which will not be described one by one in the subsequent embodiments.

[0083] Reference attached figure 1 , is a schematic flowchart of an embodiment of the method for spatial interpolation of rainfall based on optimized normal distribution weighting provided by the present invention.

[0084] The rainfall spatial interpolation method b...

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Abstract

The invention discloses a rainfall spatial interpolation method based on optimized normal distribution empowerment. The method comprises: acquiring and processing basic data; selecting a reference point; simulating weight distribution; estimating and determining a weighted parameter; adjusting a weight calculation distance; estimating and determining a weight optimization index; calculating the distance; adjusting the distance; simulating weight distribution again; and performing interpolation calculation and estimation. By adopting the rainfall spatial interpolation method based on optimized normal distribution empowerment, the spatial distribution of interpolation results is relatively natural, and the interpolation operation efficiency is ensured at the same time.

Description

technical field [0001] The invention relates to the field of geographical sciences, in particular to a rainfall spatial interpolation method based on optimizing normal distribution weighting. Background technique [0002] Spatial data interpolation methods are widely used in the acquisition of geospatial data. The specific principle is to use limited spatial sample information to estimate unknown geospatial features. At present, the widely used spatial interpolation methods mainly include: nearest neighbor method, inverse distance method, trend surface method and kriging method. [0003] The nearest neighbor method, also known as the Thiessen polygon method, only uses the nearest point for regional interpolation. It is suitable for small areas and the spatial variability of interpolation elements is not obvious. But the interpolation result spatial variation law is not ideal. The inverse distance weighting method is an accurate interpolation method, which is simple and ea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T3/40
CPCG06T3/4007
Inventor 杨中文许新宜李斌
Owner BEIJING NORMAL UNIVERSITY
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