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Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/5409

Title: Engineering aspects of photogrammetric plate measurements: Including the development of a novel interferometer
Authors: Severn, Ian
Advisors: Spooncer, RC
Jones, BE
Publication Date: 1993
Publisher: Brunel University School of Engineering and Design PhD Theses
Abstract: Two different factors involved in the measurement of photogrammetric plates have been studied. A novel interferometer designed to monitor the position of a microscope stage, to be used to measure photogrammetric plates, has been built. The prototype instrument is able to give the position of the stage with a maximum error of less than 200nm. An algorithm has been developed for a motor driven x-y microscope that is able to search a photographic plate automatically for targets, and record their positions. In a trial survey this system was able to measure the positions of the targets on the plates with an uncertainty of approximately 2gm. This result is comparable with the precision that a human operator could achieve using the same equipment, but without the fatigue effect associated with visual observation. Virtually no human interaction is necessary for the system to function.
Description: This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.
Sponsorship: This work was jointly funded by The Science and Engineering Council and The National Physical Laboratory.
URI: http://bura.brunel.ac.uk/handle/2438/5409
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