Accession Number:

AD0683783

Title:

CORRELATION STUDY OF THE UNDERWATER DIFFRACTION PATTERN OF A CORRUGATED AIR-WATER INTERFACE

Descriptive Note:

Technical memo.

Corporate Author:

PENNSYLVANIA STATE UNIV UNIVERSITY PARK ORDNANCE RESEARCH LAB

Personal Author(s):

Report Date:

1968-07-25

Pagination or Media Count:

82.0

Abstract:

This experimental investigation examines the underwater diffraction pattern of a corrugated surface insonified by a warbletone wide band FM acoustic source. Sound field data is obtained using a variable-level correlation system to measure the pressure amplitudes of the first two forward and back-scattered orders. These measurements are carried out primarily for frequencies near those for which the various scattered orders fail to appear e. g. near the cut-off frequencies.

Subject Categories:

  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE