Open AccessDigital zenith camera accuracy analysis scheme based on digital image processing
Author(s) -
Deguo Yang,
Li Cui,
Congxia Liang
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1651/1/012195
Subject(s) - zenith , geographic coordinate system , remote sensing , longitude , computer science , sensitivity (control systems) , computer vision , matching (statistics) , standard deviation , latitude , geodesy , artificial intelligence , geography , computer graphics (images) , mathematics , engineering , statistics , electronic engineering
This article uses a digital zenith camera to perform field measurements to obtain high-precision astronomical longitude and latitude data. To identify the photographed stellar markers, we utilize FFT and digital image processing methods to do CCD star image matching, the establishment of a numerical fit model for star matching, and then the astronomical coordinates of the station against the table decomposition, and finally the use of astronomical geodesy to calculate the vertical deviation of the station and the error in cyclic observation, to test the instrument in the Sensitivity in both directions, astronomical longitude and astronomical latitude.