Study on the UHV transmission tower’s interferometry and icing character in TerraSAR spotlight images

doi:10.13474/j.cnki.11-2246.2019.0381

Abstract

Abstract: This paper studies the Ultra High Voltage (UHV) transmission tower radar scattering mechanism and interferometry in TerraSAR Spotlight images. LiDAR scanning and 3D modeling tower, we analyze the scattering geometric relationship of tower's different parts based on the SAR geometric imaging relationship. Comparing and analyzing the height difference between the cross-arms of the tower based on the scattering intensity and phase change, the results show that the phase estimation is greatly interfered by the noise. In this paper, the theoretical analysis and data statistics of the radar image of the ice tower are carried out. The results show that the 10 cm ice thickness damages the dihedral scattering condition of the tower component, which causes the radar scattering signal intensity to attenuate significantly by about 8 dB. It is verified that the radar scattering intensity changes of transmission tower can be used to evaluate quantitatively the ice coating status.

Key words: spotlight, TerraSAR, UHV transmission tower, icing, dihedral reflection, SAR interferometry

CLC Number:

P234

CHEN Lulu, LI Tao, LIU Yan, LIU Jingnan. Study on the UHV transmission tower’s interferometry and icing character in TerraSAR spotlight images[J]. Bulletin of Surveying and Mapping, 2019, 0(12): 30-34.

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