Method, device and storage medium for extracting height and deformation information of high voltage transmission tower by using SAR tomography

US10989808B2 · kind B2 · utility

Assignee

• University of Electronic Science and Technology of China · CN

Inventors

• Yan Chen · Chengdu, CN
• Yunping Chen · Chengdu, CN
• Jing Chen · Shanghai, CN

Key dates

• Filing date: Oct 24, 2018
• Grant date: Apr 27, 2021
• Expiry date: May 30, 2039

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S13/9029
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method, a device and a storage medium for extracting height and deformation information of a high voltage transmission tower by using SAR tomography are disclosed. A Spaceborne satellite is used to obtain a plurality of high resolution SAR images of a region having a high voltage transmission tower. The images are then pre-processed via registration, dechirp and phase compensation to obtain observation data. The observation data is then discretized. Then the discretized observation data is resampled by using singular value decomposition, and Akaike information criterion is used to estimate the number of scattering points in the resampled observation data. The obtained number of the scattering points is used to eliminate the singular values in the reconstructed signal. Finally, the sparsity of the observation data is used together with compression sensing to realize signal reconstruction, thereby extracting the height and deformation rate at a position on the high voltage transmission tower.