Double resolution microwave holography

This thesis endeavours to record the development and subsequent evaluation of a simple technique for the recording of microwave holograms using common hardware components, which offers the possibility of significant improvements in image resolution. Practical experiment has determined that, under ideal conditions, the resolution performance of this system approaches very closely the theoretical maximum. Design aspects of the Q-band microwave source/receiver have been presented, and some emphasis placed upon the influence of antenna behaviour on hologram fidelity. Images reconstructed at optical frequencies from reduced size hologram transparencies have shown that accurate images are not possible in certain object formats -specular object reflections and the appearance of spurious images being two examples investigated. The possibility of imaging objects concealed by dielectric media has been demonstrated, and certain effects caused by the "phase-only" nature of the hologram can be explained.

Grantor dc:publisher.institution

Department of Electrical Engineering

Year dc:date.issued

1976

Author dc:creator

• Nilsen, Christopher Shakespeare

Advisor dc:contributor.advisor

• Swingler, D N

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/11427/12491

OAI identifier oai:identifier

oai:open.uct.ac.za:11427/12491