Insar-based deformation information extraction method, terminal and storage medium

Abstract

The invention discloses an InSAR-based deformation information extraction method, terminal and storage medium. The method includes: A. extracting a plurality of initial PS points of a target building; B. performing cluster analysis processing on a plurality of initial PS points, Obtain multiple aggregation points, record the number of initial PS points corresponding to each aggregation point; C, calculate the distance between two adjacent aggregation points, and calculate the difference in the number of initial PS points corresponding to two adjacent aggregation points ; Judging whether there are two adjacent aggregation points that meet the preset singular aggregation point judgment condition, the preset singular aggregation point judgment condition is that the distance is less than the preset distance threshold, and the quantity difference is greater than the preset number threshold; D, if it exists, Then remove the aggregation point corresponding to less initial PS points among the two adjacent aggregation points, and repeat step C until it does not exist. E. If it does not exist, extract deformation information according to the remaining aggregation points. The invention not only improves the processing speed, but also improves the analysis accuracy.

Description

technical field [0001] The invention relates to the technical field of synthetic aperture radar and big data analysis, in particular to an InSAR-based deformation information extraction method, a terminal and a storage medium. Background technique [0002] Land subsidence, also known as ground subsidence or subsidence, is a local descending movement (or engineering geological phenomenon) that reduces the elevation of the crustal surface due to the consolidation and compression of loose underground strata under the influence of human engineering economic activities. From the results, the ground subsidence affects the foundation structure of the building, thereby reducing its safety performance. Especially uneven settlement, it may cause local inclination of the building and change the stress state of its foundation structure. In severe cases, cracks and cracks may appear in the outer wall of the building. If no reinforcement measures are taken, with the further accumulation o...

AI Technical Summary

Problems solved by technology

[0006] For architectural targets, if a part or the whole is deformed, there is a greater possibility that the building has a safety hazard

But if only a small range of deformation occurs, it is unlikely to cause damage to the building

Therefore, if the InSAR deformation measurement technology extracts the small-scale deformation information and analyzes and processes the small-scale deformation information, the accuracy of the analysis results will be reduced.

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