MODELLING OF AN INEXPENSIVE 9M SATELLITE DISH FROM 3D POINT CLOUDS CAPTURED BY TERRESTRIAL LASER SCANNERS
This paper presents the use of Terrestrial laser scanners (TLS) to model the surface of satellite dish. In this case, the dish was an inexpensive 9m parabolic satellite dish with a mesh surface, and was to be utilised in radio astronomy. The aim of the modelling process was to determine the deviatio...
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2012-09-01
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Series: | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
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doaj-13f2a02d77694f0f8ee154c0962cf60b2020-11-25T01:42:57ZengCopernicus PublicationsThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences1682-17502194-90342012-09-01XXXVIII-5/W1231331810.5194/isprsarchives-XXXVIII-5-W12-313-2011MODELLING OF AN INEXPENSIVE 9M SATELLITE DISH FROM 3D POINT CLOUDS CAPTURED BY TERRESTRIAL LASER SCANNERSD. Belton0A. Gibson1B. Stansby2S. Tingay3K.-H. Bae4Cooperative Research Centre for Spatial information (CRC-SI), AustraliaDepartment of Spatial Sciences, Curtin University of Technology, Perth, WA, AustraliaCurtin Institute of Radio Astronomy, Curtin University of Technology, Perth, WA, AustraliaCurtin Institute of Radio Astronomy, Curtin University of Technology, Perth, WA, AustraliaDepartment of Spatial Sciences, Curtin University of Technology, Perth, WA, AustraliaThis paper presents the use of Terrestrial laser scanners (TLS) to model the surface of satellite dish. In this case, the dish was an inexpensive 9m parabolic satellite dish with a mesh surface, and was to be utilised in radio astronomy. The aim of the modelling process was to determine the deviation of the surface away from its true parabolic shape, in order to estimate the surface efficiency with respect to its principal receiving frequency. The main mathematical problems were the optimal and unbiased estimation the orientation of the dish and the fitting of a parabola to the local orientation or coordinate system, which were done by both orthogonal and algebraic minimization using the least-squares method. Due to the mesh structure of the dish, a classification method was also applied to filter out erroneous points being influenced by the supporting structure behind the dish. Finally, a comparison is performed between the ideal parabolic shape, and the data collected from three different temporal intervals.http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XXXVIII-5-W12/313/2011/isprsarchives-XXXVIII-5-W12-313-2011.pdf |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
D. Belton A. Gibson B. Stansby S. Tingay K.-H. Bae |
spellingShingle |
D. Belton A. Gibson B. Stansby S. Tingay K.-H. Bae MODELLING OF AN INEXPENSIVE 9M SATELLITE DISH FROM 3D POINT CLOUDS CAPTURED BY TERRESTRIAL LASER SCANNERS The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
author_facet |
D. Belton A. Gibson B. Stansby S. Tingay K.-H. Bae |
author_sort |
D. Belton |
title |
MODELLING OF AN INEXPENSIVE 9M SATELLITE DISH FROM 3D POINT CLOUDS CAPTURED BY TERRESTRIAL LASER SCANNERS |
title_short |
MODELLING OF AN INEXPENSIVE 9M SATELLITE DISH FROM 3D POINT CLOUDS CAPTURED BY TERRESTRIAL LASER SCANNERS |
title_full |
MODELLING OF AN INEXPENSIVE 9M SATELLITE DISH FROM 3D POINT CLOUDS CAPTURED BY TERRESTRIAL LASER SCANNERS |
title_fullStr |
MODELLING OF AN INEXPENSIVE 9M SATELLITE DISH FROM 3D POINT CLOUDS CAPTURED BY TERRESTRIAL LASER SCANNERS |
title_full_unstemmed |
MODELLING OF AN INEXPENSIVE 9M SATELLITE DISH FROM 3D POINT CLOUDS CAPTURED BY TERRESTRIAL LASER SCANNERS |
title_sort |
modelling of an inexpensive 9m satellite dish from 3d point clouds captured by terrestrial laser scanners |
publisher |
Copernicus Publications |
series |
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
issn |
1682-1750 2194-9034 |
publishDate |
2012-09-01 |
description |
This paper presents the use of Terrestrial laser scanners (TLS) to model the surface of satellite dish. In this case, the dish was an inexpensive 9m parabolic satellite dish with a mesh surface, and was to be utilised in radio astronomy. The aim of the modelling process was to determine the deviation of the surface away from its true parabolic shape, in order to estimate the surface efficiency with respect to its principal receiving frequency. The main mathematical problems were the optimal and unbiased estimation the orientation of the dish and the fitting of a parabola to the local orientation or coordinate system, which were done by both orthogonal and algebraic minimization using the least-squares method. Due to the mesh structure of the dish, a classification method was also applied to filter out erroneous points being influenced by the supporting structure behind the dish. Finally, a comparison is performed between the ideal parabolic shape, and the data collected from three different temporal intervals. |
url |
http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XXXVIII-5-W12/313/2011/isprsarchives-XXXVIII-5-W12-313-2011.pdf |
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