Satellite gravity observation data abnormal value extraction method and device and electronic equipment

A technology of observation data and extraction method, which is applied in the field of surveying and mapping engineering, can solve the problems of inability to achieve accurate detection, inability to achieve accurate detection of gross errors, and unsatisfactory detection of gross errors, and achieve the effect of accurate detection.

Inactive Publication Date: 2018-08-07
INST OF EARTHQUAKE CHINA EARTHQUAKE ADMINISTRATION
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  • Summary
  • Abstract
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  • Application Information

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Problems solved by technology

In the process of data processing, although the wavelet shrinkage threshold denoising method is sensitive to discrete gross errors and regional gross errors, it still cannot achieve accurate detection in the gross error detection process.
Although some people have improved the wavelet shrinkage threshol

Method used

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[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, various implementation modes of the present invention will be described in detail below in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that, in each implementation manner of the present invention, many technical details are provided for readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in this application can also be realized.

[0028]The first embodiment of the present invention relates to a method for extracting outliers of satellite gravity observation data. The method for extracting outliers of satellite gravity observation data is applied to electronic equipment, and the specific process is as follows:

[0029] Step 101, acquiring

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Abstract

An embodiment of the invention relates to the technical field of surveying and mapping engineering, and discloses a satellite gravity observation data abnormal value extraction method and device and electronic equipment. The satellite gravity observation data abnormal value extraction method includes the steps: acquiring first satellite gravity observation data; detecting abnormal values of the first satellite gravity observation data by a wavelet continuous function noise reduction method; calculating new numerical values according to front and back numerical values positioned at abnormal value positions in the first satellite gravity observation data; replacing the abnormal values by the calculated new numerical values to obtain second satellite gravity observation data; detecting and testing the abnormal values of the second satellite gravity observation data by a Dixon testing method. The wavelet continuous function noise reduction method is combined with the Dixon testing method,and the abnormal values in the satellite gravity observation data can be accurately detected.

Description

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Claims

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Application Information

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Owner INST OF EARTHQUAKE CHINA EARTHQUAKE ADMINISTRATION
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