MULTIPLE TAPPED PHOTOELASTIC DELAY LINE.
Abstract
The effort covered by this report is concerned primarily with the investigation of methods of improving the performance of the multiple-tapped photoelastic delay line in the areas of higher frequency operation, wider bandwidth, and increased signal-to-noise ratio. The development of the supporting components necessary to provide a practical system capability was also part of this investigation. The design and evaluation of an experimental model of a 10 megabit matched-filter is described. This device represents a practical embodiment of the photoelastic delay line technique. Operating models were produced whenever possible, and when useful information could be obtained from an operating unit. These include, in addition to the correlator mentioned above, a high intensity delay line illuminator (for a 100 usec line), a 100 channel (0.1 microsecond tap spacing) tapping device, a transistorized wideband delay line driver and a photomultiplier receiver-amplifier both operational around 15 mc/s. Designs were also obtained for the 30 mc versions of the delay line driver and receiver amplifiers. A signal-to-noise ratio of 40 db was achieved at 15 mc/s by reimaging and concentrating the arc source, however, this is not a practical method for multiple tap systems. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 11, 1964
- Accession Number
- AD0609579
Entities
People
- I. C. Miller
Organizations
- Corning Inc.