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

被引:4
|
作者
Kim, Hyukgil [1 ]
Yun, Hongsik [1 ]
Hwang, Jinsang [2 ]
Hong, Sungnam [3 ]
机构
[1] Sungkyunkwan Univ, Dept Civil Architectural & Environm Engn, Suwon 16419, South Korea
[2] Kyungwoon Univ, Dept Secur & Emergency Management, Gumi 39160, South Korea
[3] Sungkyunkwan Univ, Coll Engn, Suwon 16419, South Korea
来源
APPLIED SCIENCES-BASEL | 2017年 / 7卷 / 11期
基金
新加坡国家研究基金会;
关键词
VLBI; close-range photogrammetry; camera calibration; DLT; bundle adjustment; SELF-CALIBRATION; DIGITAL CAMERA; DEFORMATION; FEASIBILITY; MODEL;
D O I
10.3390/app7111125
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
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.
引用
收藏
页数:14
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