Accession Number : ADA017482

Title :   Synthetic Aperture Techniques.

Descriptive Note : Final technical rept.,

Corporate Author : BENDIX RESEARCH LABS SOUTHFIELD MICH

Personal Author(s) : Keating,P. N. ; Koppelmann,R. F. ; Sawatari,T.

Report Date : APR 1975

Pagination or Media Count : 58

Abstract : The purpose of the program was to study aperture synthesis techniques as they apply to holographic underwater viewing systems. Included in this program was the experimental verification of a proposed aperture synthesis technique using sequential data acquisition. Also included was a study of methods for implementing parallel data acquisition, the output of which was a system configuration and parallel data acquisition technique recommended for the synthesis of a 96 x 96 array. The study showed that the implementation of the proposed synthetic aperture system would result in a considerable cost, power, and volumetric savings over a conventional array system. For parallel data acquisition the receive time must be increased to insure adequate data separation which in turn results in an increase in Doppler sensitivity, i.e., the amount of Doppler that a target can exhibit and still be imaged is reduced.

Descriptors :   *SYNTHETIC APERTURE SONAR, HOLOGRAPHY, UNDERWATER, VIEWERS, APERTURES, UNDERWATER SOUND EQUIPMENT, HIGH RESOLUTION, DATA ACQUISITION

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE