Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A Method for Analyzing the Periodic Characteristics of Sunspot Area Based on eemd's hht

A sunspot and characteristic analysis technology, applied in the field of astronomical technology and signal processing, can solve problems such as inaccurate time scales, and achieve the effect of solving inaccurate time scales

Active Publication Date: 2021-12-17
KUNMING UNIV OF SCI & TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method for analyzing the periodic characteristics of sunspot area based on HHT of EEMD, which is used to solve the problem that the traditional periodic analysis method is constrained by the basis function and the time scale is inaccurate

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Method for Analyzing the Periodic Characteristics of Sunspot Area Based on eemd's hht
  • A Method for Analyzing the Periodic Characteristics of Sunspot Area Based on eemd's hht
  • A Method for Analyzing the Periodic Characteristics of Sunspot Area Based on eemd's hht

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: as Figure 1-16 Shown, a kind of method based on the sunspot area cycle characteristic analysis of the HHT of EEMD, the concrete steps of described method are as follows:

[0026] Step 1: Data smoothing: First, smooth the sunspot area data (using the southern hemisphere sunspot area data from May 1874 to October 2016 (daily average); figure 2 is the original data of the sunspot area in the southern hemisphere, image 3 is the smoothed data image).

[0027] SouthSmooth = smooth(South,w,'moving')

[0028]

[0029] Among them, SouthSmooth is the smoothed data, South is the original data of sunspots, w is the smoothing scale, moving means to smooth the data with the method of moving average filter, n is the nth data, and the continuous sampling data is regarded as a length For a queue fixed at N, after a new measurement, the first data of the above queue is removed, and the remaining N-1 data are moved forward in turn, and the new sampling data is inser...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for analyzing the period characteristic of sunspot area based on HHT of EEMD, which belongs to the field of astronomical technology and signal processing. The present invention adopts the sunspot area cycle characteristic analysis method of the Hilbert-Huang Transform (HHT) based on the Integrated Empirical Mode Decomposition (EEMD) algorithm, separates the fluctuations on different time scales from the original data, and the different frequencies change with time. The change of is also clearly shown. Compared with the commonly used methods, it is a direct, adaptive, data-based method, which effectively solves the problem that the traditional cycle analysis method is constrained by the basis function and the time scale is not accurate. The problem.

Description

technical field [0001] The invention relates to a method for analyzing the period characteristic of sunspot area based on HHT of EEMD, which belongs to the field of astronomical technology and signal processing. Background technique [0002] Sunspots are a basic phenomenon of solar activity. Studying the properties of sunspots is of great significance for understanding the internal structure of the sun and the space environment. People usually use the relative number of sunspots or the area of ​​sunspots to study its variation. Among them, the number of sunspot area records the area of ​​sunspots that appear on the visible sun surface every day. In a sense, it records the daily magnetic flux of a kind of solar magnetic activity, which represents the power of sunspots produced by the solar generator. One-millionth of the area of ​​the sun's hemisphere. Relevant studies have shown that the change of sunspot area reflects the change of solar surface activities (such as facula...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/14
CPCG06F17/14
Inventor 冯松刘伟行
Owner KUNMING UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com