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Building deformation monitoring method based on InSAR

A deformation monitoring and building technology, applied in measurement devices, mapping and navigation, height/level measurement, etc., can solve the problems of casualties, property, building tilt, deformation, etc., and achieve the effect of easy long-term monitoring and low cost

Inactive Publication Date: 2017-05-31
SHENZHEN ROAD & BRIDGE CONSTR GRP
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Problems solved by technology

Changes in ground conditions may cause buildings to tilt, deform, or even collapse, causing casualties and property damage, so an efficient method is needed to monitor building health and safety

Method used

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  • Building deformation monitoring method based on InSAR
  • Building deformation monitoring method based on InSAR
  • Building deformation monitoring method based on InSAR

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0034] figure 1 A flow chart of a method for monitoring deformation of a building based on InSAR of the present invention is shown, and the method for monitoring deformation of a building based on InSAR includes the following steps: screening of InSAR raw data,

[0035] From the interferometric data sequence of N SAR complex images acquired in the same scene, a main image is selected, and then all images are precisely registered with the main image.

[0036] According to the principle of optimizing the time baseline and space baseline of all interference pairs, one SAR image is used as the main im...

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Abstract

The invention relates to a building deformation monitoring method based on InSAR. The method includes the following steps that S1, InSAR original data is screened; S2, PS points are extracted and screened in a monitored region; S3, geometric phase positions of the PS points are removed; S4, the space deformation quantity of a building is solved; S5, according to the solved deformation quantity, the gradient of the building is calculated; S6, monitoring is carried out on time dimension, the steps are repeated, a monitoring differential value is obtained, and the deformation quantity and deformation rate of the building are obtained. By the utilization of the InSAR technology, the deformation field of the building in the direction of a radar sight line is obtained, spatial interpolation is carried out on pixels in the deformation field in the direction of the radar sight line, wherein the coherence of the pixels is lower than an untwisting threshold value, and therefore a spatial continuous deformation field is obtained; by processing and calculating obtained data, the deformation and deformation rate of the building are obtained. The method is large in range and low in cost and easily monitors the building for a long term during monitoring of the building, and can effectively make early warning for accelerated deformation of the building.

Description

technical field [0001] The invention relates to a deformation monitoring method, in particular to a building deformation monitoring method based on interference synthetic aperture radar. Background technique [0002] With the development of the national economy and the continuous advancement of urbanization, more and more dense buildings in cities and towns have sprung up; while the ground buildings are constantly being built, the underground space of the city is also being continuously explored and utilized. The subway Tunnels, underground comprehensive pipe corridors, underground traffic roads, etc. are also being built continuously. A problem caused by this is that the underground space is constantly being hollowed out, and the foundation conditions of the ground buildings have also changed. Changes in foundation conditions may cause buildings to tilt, deform, or even collapse, causing casualties and property losses, so an efficient method is needed to monitor building h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/90G01B15/06G01C5/00
CPCG01B15/06G01C5/00G01S13/90G01S13/9023
Inventor 张爱军李会超杨顺生
Owner SHENZHEN ROAD & BRIDGE CONSTR GRP
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