公开(公告)号：US20190339381A1

公开(公告)日：2019-11-07

申请号：US16169053

申请日：2018-10-24

Applicant: University of Electronic Science and Technology of China

Inventor： YAN CHEN ,  YUNPING CHEN ,  JING CHEN

IPC: G01S13/90 ,  G01S7/282

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.