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Three-dimensional deformation measurement method based on joint observation of multiple MIMO-SARs

A MIMO-SAR, three-dimensional deformation technology, applied in measurement devices, radio wave measurement systems, reflection/re-radiation of radio waves, etc., to achieve the effect of solving three-dimensional deformation measurement

Inactive Publication Date: 2019-11-12
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0007] In summary, in view of the problem that MIMO-SAR can only obtain one-dimensional deformation information, it is necessary to carry out research on high-precision three-dimensional deformation measurement technology

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  • Three-dimensional deformation measurement method based on joint observation of multiple MIMO-SARs

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[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0029] The invention provides a three-dimensional deformation measurement method based on multiple MIMO-SAR joint observations, comprising the following steps:

[0030] Multiple MIMO-SAR stations deployed

[0031] figure 1 Shown is the geometric schematic diagram of multi-MIMO-SAR joint observation. In order to realize the measurement of the three-dimensional deformation information of a monitoring area, at least three MIMO-SARs are required to monitor the area simultaneously from different positions. When using multiple MIMO-SAR joint observations, the difference in observation angles between different radars directly affects the accuracy of 3D deformation ...

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Abstract

The invention provides a three-dimensional deformation measurement method based on joint observation of multiple MIMO-SARs. The specific process of the three-dimensional deformation measurement methodbased on the joint observation of multiple MIMO-SARs comprises the following steps: performing station distribution on at least three MIMO-SARs, so that the MIMO-SARs observe the same area to be monitored; registering radar images of the MIMO-SARs, so as to obtain a cognominal PS point set of the common observation area; performing one-dimensional deformation measurement on the area to be observed by using the MIMO-SARs to obtain the deformation information corresponding to each PS point on the image during each measurement cycle; and selecting the deformation information corresponding to thecognominal PS points from all the PS points to perform three-dimensional deformation measurement. The three-dimensional deformation measurement method based on the joint observation of multiple MIMO-SARs can realize real-time high-accuracy acquisition of three-dimensional deformation information of the observation area.

Description

technical field [0001] The invention belongs to the technical field of synthetic aperture radar, and in particular relates to a three-dimensional deformation measurement method based on multiple MIMO-SAR joint observations. Background technique [0002] Landslide disasters are the most frequent and harmful geological disasters. Generally speaking, among the major accidents caused by landslides, open-pit mine slope landslides, landslides, tailings dam slope landslides and dam landslides occur most frequently. Frequently, the losses are the greatest. It has become a very urgent task to study the triggering mechanism of landslides and realize fast and accurate prediction of landslides. The factors that induce landslides mainly include natural factors (climate change, volcanic activity, geological movement, etc.) Before that, the surface will first undergo a small displacement. Therefore, obtaining the surface deformation information in the monitoring area is of great signifi...

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Application Information

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IPC IPC(8): G01S13/90G01S13/87
CPCG01S13/87G01S13/90G01S13/9023
Inventor 胡程田卫明曾涛邓云开王晶阳
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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