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Experiments on a Ground-Based Tomographic Synthetic Aperture Radar

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Title
Experiments on a Ground-Based Tomographic Synthetic Aperture Radar
Other Titles
지상용 토모그래피 영상레이더에 관한 실험
Authors
Lee, Hoonyol
Han, Hyangsun
Ji, Younghun
Keywords
GB-SAR; GB-TomoSAR; SAR; ground-based; tomography
Issue Date
2016
Citation
Lee, Hoonyol, Han, Hyangsun, Ji, Younghun. 2016. "Experiments on a Ground-Based Tomographic Synthetic Aperture Radar". REMOTE SENSING, 8(8): 667-11.
Abstract
This paper presents the development and experiment of three-dimensional image formation by using a ground-based tomographic synthetic aperture radar (GB-TomoSAR) system. GB-TomoSAR formulates two-dimensional synthetic aperture by the motion of antennae, both in azimuth and vertical directions. After range compression, three-dimensional image focusing is performed by applying Deramp-FFT (Fast Fourier Transform) algorithms, both in azimuth and vertical directions. Geometric and radiometric calibrations were applied to make an image cube, which is then projected into range-azimuth and range-vertical cross-sections for visualization. An experiment with a C-band GB-TomoSAR system with a scan length of 2.49 m and 1.86 m in azimuth and vertical-direction, respectively, shows distinctive three-dimensional radar backscattering of stable buildings and roads with resolutions similar to the theoretical values. Unstable objects such as trees and moving cars generate severe noise due to decorrelation during the eight-hour image-acquisition time.
URI
http://repository.kopri.re.kr/handle/201206/7479
DOI
http://dx.doi.org/10.3390/rs8080667
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