Accession Number:

AD0755481

Title:

A Design Method for Unequally Spaced Sonar Arrays.

Descriptive Note:

Technical rept.,

Corporate Author:

TEXAS UNIV AUSTIN APPLIED RESEARCH LABS

Personal Author(s):

Report Date:

1973-01-22

Pagination or Media Count:

20.0

Abstract:

A simplified design procedure for unequally spaced sonar arrays is presented in this report. The simplification is accomplished by employing a relation between the current in a given piezoelectric element and the area of the radiating surface of that element. This relation is used to adapt a standard amplitude shading technique to the spacing of the array. A 50 wavelengths long unshaded array, of 60 elements, is used to illustrate the design technique. The beam pattern of the resulting array calculated using a standard summation formula for discrete radiators exhibits side lobe levels of -21 dB and a half-power beamwidth of 1.4 degree. Author

Subject Categories:

  • Acoustic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE