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  • 标题:Evaluation of Geometrical Accuracy In Displacement Monitoring of Engineering Structures Using Close-range Photogrammetry
  • 本地全文:下载
  • 作者:A. Mokarrami ; H. Ebadi
  • 期刊名称:ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
  • 印刷版ISSN:2194-9042
  • 电子版ISSN:2194-9050
  • 出版年度:2004
  • 卷号:XXXV Part B5
  • 页码:753-758
  • 出版社:Copernicus Publications
  • 摘要:Almost every part of the earth's surface and even man-made structures are subject to variations of size, shape and position with time. The period of these changes differs from case to case depending on the individual characteristics of the deformable body. The determination and sometimes interpretation of these movements is the objective of deformation surveys. Photogrammetric methods are suitable for monitoring displacements, because a photograph represents a remote, complete and instantaneous record of an object. An instantaneous record of particular situation which may be changing in time, together with a complete coverage, is most appropriate for a phenomenon such as a moving object. Here, rotary kiln in Abyek cement factory has been chosen for study. The main purpose of monitoring these kilns is to determine the displacement of the centre of the kiln in the place of rollers. On the other hand, we want to monitor the displacement of the kiln in order to avoid dangers due to horizontal and vertical movements. Close-Range photogrammetric technique was chosen to carry out this research. The results according to the ground coordinate of the check points, accuracy derived from variance-covariance matrix and computing the displacements for four points instead of one point, are acceptable and mm accuracy for determining the coordinates shows that this method is suitable for monitoring studies, especially for specific cases like this case which popular geodetic methods are not applicable due to high temperature of the kiln area
  • 关键词:Close range ; Monitoring ; Non-metric ;Digital ; Photography ; Adjustment ;Calibration ; Accuracy
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