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Landslide dynamic identifying and monitoring technology based on synthetic aperture radar differential interferometry (D-InSAR)

A dynamic identification and differential technology, applied in measurement devices, radio wave measurement systems, radio wave reflection/re-radiation, etc. Dynamic monitoring and other issues

Inactive Publication Date: 2012-08-22
BEIJING BEIKE ANDI TECH DEV
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AI Technical Summary

Problems solved by technology

These monitoring methods are "point" data collection methods, which cannot fully reflect the overall surface condition of landslide deformation in the region, and cannot meet the purpose of early identification and dynamic monitoring of wide-area landslides in space.

Method used

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  • Landslide dynamic identifying and monitoring technology based on synthetic aperture radar differential interferometry (D-InSAR)
  • Landslide dynamic identifying and monitoring technology based on synthetic aperture radar differential interferometry (D-InSAR)
  • Landslide dynamic identifying and monitoring technology based on synthetic aperture radar differential interferometry (D-InSAR)

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Embodiment Construction

[0025] Some computing methods involved in the present invention.

[0026] 1. Acquisition of aspect displacement.

[0027] The first method is to select Slope Displacement in the dialog box of the last step of D-InSAR three-track difference in SARscape (synthetic aperture radar data processing software), such as figure 1 shown.

[0028] The second method is to calculate through the formula, the formula is as follows.

[0029] Among them: A=Slope angle, B=Zenith incident angle, C=Azimuth incident azimuth, D=Aspect slope azimuth, E=SightDisplacement line-of-sight displacement.

[0030] 2. The formula for solving the angle between the satellite line of sight and the slope normal is:

[0031] Among them: azimuthAngle is the azimuth angle of the satellite flight, θ is the angle between the vertical line of the satellite surface, δ is the azimuth angle of the ground surface, and α is the slope angle of the ground surface.

[0032] In order to enable those skilled in the art to be...

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Abstract

The invention discloses a landslide dynamic identifying and monitoring technology based on synthetic aperture radar differential interferometry (D-InSAR). The landslide dynamic identifying and monitoring technology solves practical problems in D-InSAR landslide disaster monitoring in alpine valley regions, and the information which means nothing to landslide identification can be filtered, so that a landslide area in which deformation happens is found out in a monitoring range. A method for extracting a landslide disaster range from D-InSAR monitoring results comprises the following steps of: extracting an area according with landslide moving characteristics from the D-InSAR monitoring results through a sloping filtering technology; analyzing a D-InSAR reliable area, and extracting reliable data from the monitoring results according to the reliable area; performing a filtering analysis method of flat areas and a filtering analysis method of movement errors; and performing a landslide identification method based on a time-space continuity technology.

Description

technical field [0001] The invention relates to the field of synthetic aperture radar monitoring of geological disasters. Background technique [0002] As a typical geological disaster, landslide disasters cause serious harm to the country and the people every year. Therefore, effective monitoring and early warning of landslide disasters is very important. Effective early warning of landslides is to know where the landslide is, not just to know where the landslide is and then monitor it. Dynamic identification and trend monitoring of landslides is one of the important contents of regional landslide disaster monitoring. The traditional landslide surface deformation monitoring methods mainly include geodetic method, GPS (Global Positioning System) method, automatic extensometer method and distributed optical fiber method, etc. These monitoring methods are "point" data collection methods, which cannot fully reflect the overall surface condition of landslide deformation in th...

Claims

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Application Information

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IPC IPC(8): G01S13/90
Inventor 不公告发明人
Owner BEIJING BEIKE ANDI TECH DEV
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