Three-dimensional positioning method of high-rise building settlement monitoring results based on high-resolution insar

Abstract

The invention discloses a three-dimensional positioning method for high-rise building settlement monitoring results based on high-resolution INSAR, and belongs to the technical field of INSAR data application processing and building safety monitoring. First, use high-resolution SAR satellites to conduct periodic observations of the target building to be monitored, obtain a SAR monitoring image in each period, obtain the reference SAR image and the settlement monitoring results of the target building to be monitored, and further obtain the side-view direction and orbit of the reference SAR image direction. Then, the mask of the target building to be monitored is determined by using the spatial position relationship, the gray scale and texture distribution of the reference SAR image, the original position information of each PS point within the mask range is extracted, and the incident angles corresponding to all PS points are calculated, combined with their corresponding Elevation parameters, calculate the correct three-dimensional coordinate position of each PS point. Finally, the spatial three-dimensional coordinate position is substituted into the three-dimensional GIS software, and the corresponding deformation results of the target building to be monitored are observed in real time. The invention realizes the transformation of deformation monitoring results from two-dimensional to three-dimensional.

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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