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Title: Engineering aspects of photogrammetric plate measurements, including the development of a novel interferometer
Author: Severn, Ian
ISNI:       0000 0001 3394 4962
Awarding Body: Brunel University
Current Institution: Brunel University
Date of Award: 1993
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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.
Supervisor: Spooncer, R. C. ; Jones, B. E. Sponsor: Science and Engineering Research Council ; National Physical Laboratory
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: Manufacturing metrology