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Open AccessArticle

A Static Displacement Monitoring System for VLBI Antenna Using Close-Range Photogrammetry

1
Department of Civil, Architectural & Environmental Engineering, Sungkyunkwan University, Suwon 16419, Korea
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Department of Security and Emergency Management, Kyungwoon University, Gumi 39160, Korea
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College of Engineering, Sungkyunkwan University, Suwon 16419, Korea
*
Author to whom correspondence should be addressed.
Appl. Sci. 2017, 7(11), 1125; https://doi.org/10.3390/app7111125
Received: 25 September 2017 / Revised: 31 October 2017 / Accepted: 31 October 2017 / Published: 1 November 2017
In this study, a static displacement monitoring program was developed to maintain the accurate performance of a Very Long Baseline Interferometry (VLBI) antenna by monitoring its structural stability. The monitoring program was designed to measure static displacement, among the many displacements of the antenna’s main reflector, which can directly affect its performance. The program measures the position of a monitored object with mm-level accuracy through close-range photogrammetry that uses high-resolution Charge Coupled Device (CCD) cameras. The developed program will be used to evaluate the structural soundness of an antenna based on continuous displacement measurements, which can also be used as basic data for repair and reinforcement work in the future. View Full-Text
Keywords: VLBI; close-range photogrammetry; camera calibration; DLT; bundle adjustment VLBI; close-range photogrammetry; camera calibration; DLT; bundle adjustment
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Kim, H.; Yun, H.; Hwang, J.; Hong, S. A Static Displacement Monitoring System for VLBI Antenna Using Close-Range Photogrammetry. Appl. Sci. 2017, 7, 1125.

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