Ultra High Voltage Power Tower SAR Interferometry and Icing Tower Testing Results

This paper studies the Ultra High Voltage (UHV) power tower target interferometry in TerraSAR Spotlight (TSX-SL) mode SAR images. Based on the 3D point cloud data acquired by high-precision Lidar, the tower target geometric projection and scattering mechanism are analyzed. In the UHV tower cross are...

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Bibliographic Details
Main Authors: Li, Tao, Chen, Lulu, Liu, Yan, Liu, Jingnan, Gao, Kefu
Format: Conference Proceeding
Language:English
Subjects:
dihedral reflection
Ice
icing
Poles and towers
Radar polarimetry
Reflection
SAR interferometry
Scattering
Synthetic aperture radar
TerraSAR Spotlight
Three-dimensional displays
UHV power tower
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Summary:This paper studies the Ultra High Voltage (UHV) power tower target interferometry in TerraSAR Spotlight (TSX-SL) mode SAR images. Based on the 3D point cloud data acquired by high-precision Lidar, the tower target geometric projection and scattering mechanism are analyzed. In the UHV tower cross area of the SAR interferometry, the coherence are stable and the phase are smooth and consistency. However, the accuracy of the tower elevation derived by the phase is not so accurate, which means the phase noise are little bit high. Theoretically, the special designed tower cross's scattering mechanism are dihedral reflection. The test results show that the 10cm thick ice on the tower cross surface damaged the dihedral reflection. The radar scattering signal intensity is decreased nearly 8dB in this condition. This paper testified that the variation of the radar scattering intensity on the tower cross can be used to quantitatively evaluate towers' icing state.
ISSN:2474-2333
DOI:10.1109/APSAR46974.2019.9048254