Three-dimensional time sequence deformation monitoring method integrating different platform and orbit SAR data

Abstract

The invention provides a three-dimensional time sequence deformation monitoring method integrating different platform and track SAR data. The three-dimensional time sequence deformation monitoring method comprises the following steps: step 1, selecting multi-domain high-resolution SAR images of different platforms with the interference effect conforming to the three-dimensional deformation monitoring requirements of the electric power facility areas; step 2, extracting a public permanent scatterer point of the electric power facility area on each platform, constructing a three-dimensional deformation observation net, and solving the difference between the observation arc section LOS direction deformation an on each SAR image; step 3, according to the deformation model, the imaging time ofeach platform and the imaging interference combination of all platforms, using a dynamic self-adaptive filtering algorithm, and fusing three-dimensional deformation observation nets at different imaging time, and calculating the dynamic three-dimensional time sequence deformation. The data of different platforms and tracks are fused, and the problem that the Insar deformation monitoring is only sensitive to LOS direction deformation is solved.

Description

technical field [0001] The invention relates to the technical field of geodesy of remote sensing images, in particular to a three-dimensional time-series deformation monitoring method for fusing SAR data of different platforms and orbits. Background technique [0002] At present, the deformation monitoring methods of power facilities are mainly level and GPS measurement. However, these traditional methods not only consume a lot of manpower and material resources, but also have obvious technical defects: the level and GPS measurement are the results of point targets, and the results are relatively sparse. , it will be difficult to detect some relatively hidden disasters with no obvious deformation characteristics, making it difficult to monitor some power facilities distributed in the wilderness. In addition, most of the power facilities are distributed in the open field, and the working environment is relatively harsh. The occurrence of geological disasters will cause great ...

AI Technical Summary

Problems solved by technology

[0002] At present, the deformation monitoring methods of power facilities are mainly level and GPS measurement. However, these traditional methods not only consume a lot of manpower and material resources, but also have obvious technical defects: the level and GPS measurement are the results of point targets, and the results are relatively sparse. , it will be difficult to detect some relatively hidden disasters with no obvious deformation characteristics, making it difficult to monitor some power facilities distributed in the wilderness

Therefore, the traditional InSAR technology will not be able to detect and treat some hidden geological disasters early, which will cause huge damage to power facilities and cause huge losses to power companies

In addition, the current main InSAR 3D deformation monitoring methods are basically focused on static 3D deformation monitoring, so long-term effective monitoring of some geological disasters dominated by slow deformation will not be possible.

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