Engineering aspects of photogrammetric plate measurements: Including the development of a novel interferometer

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.

Grantor dc:publisher

Brunel University School of Engineering and Design PhD Theses

Year dc:date.issued

1993

Author dc:creator

• Severn, Ian

Advisors dc:contributor.advisor

• Spooncer, RC
• Jones, BE

Language dc:language.iso

en

Repository record dc:identifier.uri

http://bura.brunel.ac.uk/handle/2438/5409

OAI identifier oai:identifier

oai:bura.brunel.ac.uk:2438/5409