Accession Number:

AD0609579

Title:

MULTIPLE TAPPED PHOTOELASTIC DELAY LINE.

Descriptive Note:

Final rept.,

Corporate Author:

CORNING GLASS WORKS BRADFORD PA

Personal Author(s):

Report Date:

1964-12-11

Pagination or Media Count:

185.0

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 mcs. 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 mcs by reimaging and concentrating the arc source, however, this is not a practical method for multiple tap systems. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE