Title:
METHOD FOR EXTRACTING THREE-DIMENSIONAL SURFACE DEFORMATION BY COMBINING UNMANNED AERIAL VEHICLE DOMS AND SATELLITE-BORNE SAR IMAGES
Document Type and Number:
WIPO Patent Application WO/2022/213673
Kind Code:
A1
Abstract:
A method for extracting a three-dimensional surface deformation by combining unmanned aerial vehicle digital orthophoto maps (DOMs) and satellite-borne SAR images, which method is applicable to the field of surface deformation and geological disaster monitoring. The method comprises: acquiring an LOS-direction surface deformation of a target region by using SAR or InSAR technology; acquiring surface image data of the target region by using an unmanned aerial vehicle, and generating DOMs having the same resolution; by using a fine registration method, calculating coordinate offsets of homonymous pixel points on DOMs of two periods in the east-west direction and in the south-north direction, and in view of the resolution of the DOMs, obtaining horizontal movements of a surface point corresponding to each pixel point in the east-west and south-north directions; and substituting, into an SAR three-dimensional deformation model, the horizontal movements in the east-west and south-north directions that are acquired by using the DOMs, and the LOS-direction deformation, and calculating a vertical surface subsidence value W, so as to obtain a three-dimensional surface deformation. In the method, unmanned aerial vehicle DOMs are combined with satellite-borne SAR images to acquire a three-dimensional surface deformation, such that a wide range is covered, there is no need to come in contact with the surface, and a good effect is achieved, thereby providing a new method for monitoring a three-dimensional surface deformation.
Inventors:
FAN HONGDONG (CN)
ZHUANG HUIFU (CN)
TAN ZHIXIANG (CN)
ZHANG HONGZHEN (CN)
HAO MING (CN)
ZHUANG HUIFU (CN)
TAN ZHIXIANG (CN)
ZHANG HONGZHEN (CN)
HAO MING (CN)
Application Number:
PCT/CN2021/141462
Publication Date:
October 13, 2022
Filing Date:
December 27, 2021
Export Citation:
Assignee:
UNIV CHINA MINING (CN)
International Classes:
G01B7/24; G01S13/86; G01S13/90; G01S19/42
Foreign References:
| CN113091599A | 2021-07-09 | |||
| CN112577438A | 2021-03-30 | |||
| JP2017207457A | 2017-11-24 | |||
| CN109059849A | 2018-12-21 | |||
| KR20110048925A | 2011-05-12 |
Attorney, Agent or Firm:
JW IP LAW FIRM (CN)
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