Accession Number : AD0717586

Title :   An Electro-Mechanical Acoustic Imaging Scanner Assembly.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s) : Pearson,John Davis

Report Date : DEC 1970

Pagination or Media Count : 38

Abstract : The design of a combined electro-mechanical acoustic image scanning assembly is described. Various acoustic imaging system techniques have demonstrated an ability to form underwater images at distances greater than those obtained by optical means. The scanning assembly utilizes a sixteen element linear transducer array mounted on the radius of an eight inch diameter circle at the focal plane of an acoustic lens. The line array is rotated at a constant speed of 400 RPM. Acoustic signals at 250 KHZ of approximately 26 db re 1 ubar at the transducers were sufficient to produce satisfactory detection. (Author)

Descriptors :   (*IMAGE CONVERTERS, SCANNING SONAR), DESIGN, FEASIBILITY STUDIES, ACOUSTIC SIGNALS, SIGNAL-TO-NOISE RATIO, DRIVES, THESES

Subject Categories : Electrical and Electronic Equipment
      Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE