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Section interpolation encryption method based on dichotomy and layered lowest point

An encryption method and nadir technology, applied in the field of cross-section interpolation encryption based on dichotomy and hierarchical nadir, can solve problems such as insufficient consideration of key information

Active Publication Date: 2021-06-25
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above techniques fully consider the overall shape of the section, but insufficient consideration is given to some key information in the section data, such as the elevation of the bottom of the channel

Method used

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  • Section interpolation encryption method based on dichotomy and layered lowest point
  • Section interpolation encryption method based on dichotomy and layered lowest point
  • Section interpolation encryption method based on dichotomy and layered lowest point

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Such as figure 1 As shown, step 100 is executed to obtain upstream cross-sectional data and downstream cross-sectional data.

[0048] Step 110 is executed, traversing the upstream cross-section data points of the position to be interpolated to find the lowest elevation point of the upstream data.

[0049] Step 120 is executed, using a data segmentation method to segment the upstream section data points to obtain an upstream segmented data table.

[0050] Such as figure 2 As shown, the data segmentation method includes the following sub-steps:

[0051] Execute step 121, divide the section data points into left and right two groups of data according to the lowest elevation point, and define the division depth as 1.

[0052] Execute step 122, traverse the newly obtained left and right data points, find out the respective lowest elevation points, define the topological properties of the newly found two lowest elevation points, including data point number, segmentation dep...

Embodiment 2

[0063] Aiming at the shortcomings of the prior art, the present invention proposes a section interpolation encryption method based on "dichotomy" and "lowest point of hierarchy". The theoretical basis of this invention is as follows: water, as a fluid, is affected by gravity, and always preferentially occupies the lower point position, so the lower point is crucial to the phenomenon of water flow movement and should be fully considered; in addition, in one-dimensional river channel hydrodynamics In the calculation, the processing of the channel bottom slope item is an important part of the momentum calculation, so the lowest point (corresponding to the channel bottom elevation) is the most important point in the section data points, which must be considered separately in the generation of new sections.

[0064] The invention provides a section interpolation encryption method based on "dichotomy" and "lowest point of layering", and the specific technical scheme is as follows.

...

Embodiment 3

[0075] The invention proposes a section interpolation encryption method and device based on "dichotomy" and "lowest point of layering". The theoretical basis of this invention is as follows: water, as a fluid, is affected by gravity, and always preferentially occupies the lower point position, so the lower point is crucial to the phenomenon of water flow movement and should be fully considered; in addition, in one-dimensional river channel hydrodynamics In the calculation, the processing of the channel bottom slope item is an important part of the momentum calculation, so the lowest point (corresponding to the channel bottom elevation) is the most important point in the section data points, which must be considered separately in the generation of new sections.

[0076] The implementation steps of the section interpolation encryption method and device based on the "dichotomy" and "layered lowest point" are as follows:

[0077] Step one, such as Figure 6 As shown, traverse the...

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Abstract

The invention discloses a section interpolation encryption method based on a dichotomy and layered lowest points, which comprises the following steps: finding out respective lowest points for upstream and downstream section data at a to-be-interpolated position; dividing the section data into left and right groups according to the lowest points, and finding out the lowest points of each group; repeating the process, and simultaneously defining the topological attribute of the lowest point of each layer until the segmentation cannot be continued; establishing a corresponding relationship between two data points which are in the same segmentation depth layer, have a corresponding relationship between the parent data points and are located on the same side of the respective parent data points; establishing a corresponding relation between the end data points of the upstream section and the downstream section, and correcting or supplementing the corresponding relation; and based on the corresponding relation, performing linear interpolation at the position to be interpolated, and forming a new section. The invention fully considers the fact that water is used as fluid and is influenced by gravity, and the lower point is more important for water flow, and is more suitable for hydrodynamic calculation.

Description

technical field [0001] The invention relates to the technical field of water conservancy engineering, in particular to a section interpolation and encryption method based on dichotomy and layered lowest point. Background technique [0002] In the practice of hydraulic engineering, especially in engineering design, flood forecasting, reservoir scheduling, etc., it is often necessary to build a one-dimensional hydrodynamic model based on natural river channels to provide data support. Among the elements of model building, cross-sectional data is crucial. The quality of the river cross-section data is reflected in two aspects, namely the degree of reflecting the true shape of the cross-section and the distance between the cross-sections. [0003] Sections are generally characterized by a set of discrete data points (shaped like (y1, z1), (y2, z2)..., where y generally represents the distance from the left bank, and z represents the elevation). In early water conservancy appli...

Claims

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Application Information

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IPC IPC(8): G06F30/13G06F30/28
CPCG06F30/13G06F30/28
Inventor 李敏刘业森臧文斌李匡吴恒卿胡昌伟张红萍徐美刘媛媛郑敬伟柴福鑫刘舒崔洁郝晓丽
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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