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Method for assessing geomagnetic field space prolongation algorithm

A continuation algorithm and technology of the geomagnetic field, applied in the field of geophysical exploration, can solve problems such as needs and no evaluation method of the geomagnetic field space continuation algorithm, and achieve the effect of a simple evaluation method

Inactive Publication Date: 2013-08-21
ZHEJIANG UNIV
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Problems solved by technology

At present, there are very few researches and reports in this area at home and abroad, and there is no evaluation method for the spatial continuation algorithm of the geomagnetic field, which makes the research in this area more urgent.

Method used

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  • Method for assessing geomagnetic field space prolongation algorithm
  • Method for assessing geomagnetic field space prolongation algorithm
  • Method for assessing geomagnetic field space prolongation algorithm

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Experimental program
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Embodiment Construction

[0056] The present invention will be further explained below in combination with specific embodiments.

[0057] (1) Calculate the mean square relative error of the spatial continuation algorithm of the geomagnetic field

[0058]According to the known distribution of geomagnetic anomaly field in a certain region of space, the algorithm of calculating the distribution of geomagnetic anomaly field in other regions of space is called geomagnetic field space continuation algorithm.

[0059] The relative mean square error between the geomagnetic field in a certain area and the real geomagnetic field (or theoretical geomagnetic field) calculated by using the geomagnetic field continuation algorithm is used for the accuracy evaluation index of the continuation field, that is, the relative mean square Error is used as the standard of continuation accuracy, and the calculation formula of relative mean square error is:

[0060] ϵ = ...

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Abstract

The invention discloses a method for assessing a geomagnetic field space prolongation algorithm. The method comprises a step of establishing an assessing standard of single assessment indicators of the geomagnetic field space prolongation algorithm, wherein the single assessment indicators comprise prolongation precision, prolongation distance, prolongation area, noise effect and prolongation calculating time, the relative error of mean square of the prolongation result of the geomagnetic field space prolongation algorithm to theory data is used as the standard of the prolongation precision, a step of establishing comprehensive assessment standards including all single assessment indicators, a step of calculating a comprehensive score according to the prolongation result of the geomagnetic field space prolongation algorithm, and rating the geomagnetic field space prolongation algorithm. The method can provide a quantitative evaluation basis for the geomagnetic field space prolongation algorithm, can also provide a basis for how to select the prolongation algorithm and how to judge whether the selected prolongation algorithm conforms to application requirements or not, and can carry out quantitative evaluation on the adaptability of the geomagnetic field space prolongation algorithm. The method for assessing the geomagnetic field space prolongation algorithm is simple.

Description

technical field [0001] The invention relates to the technical field of geophysical prospecting, in particular to an evaluation method for a spatial extension algorithm of the geomagnetic field. Background technique [0002] With the development of science and technology and the continuous increase of application requirements, the development and application requirements of geophysical prospecting technology continue to increase. [0003] Magnetic prospecting is an irreplaceable and important detection method in geophysical prospecting, mainly including aerial, ground, sea surface and submarine magnetic surveys. The magnetic measurement data obtained by these magnetic measurement techniques are the basis of various magnetic measurement data interpretation methods and their application effects. However, due to the limitations of the magnetic measurement environment, magnetic measurement cost, magnetic measurement time, and magnetic measurement workload, it is impossible to pe...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 杨长福余海龙秦林江刘波李素敏
Owner ZHEJIANG UNIV
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