High-rise building settlement monitoring result three-dimensional positioning method based on high-resolution INSAR

Abstract

The invention discloses a high-rise building settlement monitoring result three-dimensional positioning method based on a high-resolution INSAR, and belongs to the technical field of INSAR data application processing and building safety monitoring. The method comprises the following steps: firstly, periodically observing a to-be-monitored target building by utilizing a high-resolution SAR satellite, respectively acquiring an SAR monitoring image in each period, acquiring a reference SAR image and a settlement monitoring result of the to-be-monitored target building, and further acquiring a side view direction and an orbit direction of the reference SAR image; secondly, determining a mask of the to-be-monitored target building by utilizing the spatial position relationship and referring tothe gray scale and texture distribution of the SAR image, extracting original position information of each PS point in the range of the mask, calculating incident angles corresponding to all PS points, and calculating a correct spatial three-dimensional coordinate position of each PS point in combination with respective corresponding elevation parameters; and finally, substituting the spatial three-dimensional coordinate position into three-dimensional GIS software, and observing a corresponding deformation result of the to-be-monitored target building in real time. According to the invention,the transformation of the deformation monitoring result from two dimensions to three dimensions is realized.

Description

technical field [0001] The invention belongs to the technical field of INSAR (Interferometry Synthetic Aperture Radar, Interferometric Synthetic Aperture Radar) data application processing and building safety monitoring, and specifically relates to a high-resolution INSAR-based three-dimensional positioning method for high-rise building settlement monitoring results. Background technique [0002] With the rapid development of economic construction and the rapid development of urban modernization, a large number of high-rise buildings have been newly built in large and medium cities. At present, housing construction is the most important property and life guarantee for individuals and families, and its quality and safety are related to the vital interests of the people. However, in recent years, building collapses have occurred frequently in various parts of our country, causing serious casualties and economic losses. In order to ensure the safety of the building, it is nece...

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Problems solved by technology

[0007] However, the PS point deformation monitoring results obtained by the commonly used INSAR deformation monitoring and processing software (such as SNAP, SARscape, GAMMA software, etc.) are all based on the two-dimensional plane. Geometry distortion such as bottom inversion not only affects the expression of 3D information of high-rise buildings in IDI, but also fails to reflect the advantages of high-resolution SAR monitoring settlement results

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