Influence of Photogrammetric and internal refractions on definition of linear elements of external orientation
Abstract
Influence of Photogrammetric and internal refractions on definition of linear elements of external orientation
Incoming article date: 14.10.2018The object of research in the presented work is the influence of photogrammetric and internal refractions on the definition of linear elements of external orientation. At the conclusion of photogrammetry formulas it is supposed that the light beam is a straight line from the object to the center of the projection. In fact a beam of light passing through the atmosphere layers of various density is bent. This bend is called refraction. The determination of the elements of internal and external orientation and corrections to the coordinates of the points of the image by control points is based upon a decision of the spatial photogrammetric back-sight. Compared to the rigorous method a simpler method for solving the spatial photogrammetric back-sight is suggested which validity check performed by the modeling method showed its rather high accuracy.
Keywords: photogrammetry, back-sight, spatial photogrammetric back-sight, refraction, elements of internal and external orientation, control points, modeling method