Local gravity anomaly extraction method based on satellite height measurement gravity data

A technology of gravity anomaly and gravity data, applied in image data processing, instruments, calculations, etc., can solve the problems of missing edges and low accuracy of edge fitting.

Active Publication Date: 2020-01-17
CHINA UNIV OF PETROLEUM (EAST CHINA)
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The experimental principles of these two methods are relatively simple, but there will be more limitations in the experimental process.
For example, there will be missing edges or low edge fitting accuracy. It can be seen that it is difficult to effectivel...

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
  • Local gravity anomaly extraction method based on satellite height measurement gravity data
  • Local gravity anomaly extraction method based on satellite height measurement gravity data
  • Local gravity anomaly extraction method based on satellite height measurement gravity data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation of the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments:

[0048] refer to figure 1 , the specific implementation steps of the present invention are:

[0049] (1) Gravity gradient data G′ is obtained by using the gravity data G and the sobel operator, and then P gravity anomaly regions are obtained.

[0050] Among them, the gravity gradient data G' threshold is set to 1.35mgal / km, and the area greater than the gravity gradient data threshold is the gravity anomaly area. The formula for calculating the gravity gradient data G' is:

[0051]

[0052] In the formula, G x is the transverse gradient of the gravity data G, G y is the longitudinal gradient of the gravity data G.

[0053] (2) In each gravity anomaly area, extract the boundary line of the gravity anomaly area, obtain the...

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 discloses a local gravity anomaly extraction method based on satellite height measurement gravity data, which comprises the following basic steps of: processing satellite altimetry gravity data by using a sobel operator to obtain each gravity anomaly region; extracting a minimum enclosing rectangle of each gravity anomaly region according to the boundary line of each gravity anomalyregion; performing coordinate system rotation on the minimum enclosing rectangle of each gravity anomaly region to obtain a transformation rectangle, and obtaining a gravity anomaly value in each transformation rectangle region by utilizing an improved curved surface fitting method; performing interpolation processing on the gravity abnormal value of each transformation rectangle by utilizing a network function to obtain a regional abnormal gravity value of each gravity abnormal region; and finally obtaining a local gravity abnormal value of each gravity abnormal region. The method is scientific and reasonable and has high operability and practicability, and the satellite height measurement gravity data are processed through the network function interpolation method to obtain local gravityanomaly information.

Description

technical field [0001] The invention relates to a network function interpolation method, in particular to a local gravity anomaly extraction method based on satellite altimetry gravity data. Background technique [0002] The generally obtained gravity data is the Bouguer gravity anomaly data, which is the simplest and most widely studied gravity anomaly data in contemporary gravity research. The Bouguer gravity anomaly is composed of regional gravity anomaly and local gravity anomaly. Among them, gravity anomalies caused by geological factors with a large distribution and deep influence (such as regional geological structures) are called regional gravity anomalies, and small-scale gravity anomalies caused by geological factors (such as minerals, oil and gas) called a local gravity anomaly. It can be seen that the extraction of local gravity anomalies is not only an important research content of resource exploration, but also helpful to the study of geological structures. ...

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
IPC IPC(8): G06T7/66G06T7/187G06T3/60
CPCG06T3/60G06T7/187G06T7/66G06T2207/10032
Inventor 刘善伟叶传龙孙钦婷
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap