Accession Number : ADD008932

Title :   Miniaturized Scan within a Pulse Sonar.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Holzschuh,Jack E

Report Date : 01 Sep 1981

Pagination or Media Count : 11

Abstract : An improvement for a sonar is provided wherein the improvement includes a line array of N listening transducer elements, each listening element being capable of receiving an acoustic signal and outputting a corresponding electrical signal. A plurality of beamformers is provided wherein each beamformer has an input and an output, the input of each beamformer receiving the output from each listening element. A switching device is interconnected between the listening elements and the beamformers for alternately switching the outputs of the listening elements to each beamformer between two modes, one mode being a predetermined order and the other mode being an inversion of the predetermined order. With this arrangement only half the normal number of beamformers is required, thereby significantly reducing the weight and size of the sonar. (Author)

Descriptors :   *Patents, *Sonar transducers, *Scanning sonar, *Beam forming, *Sonar arrays, Sonar pulses, Electronic scanners, Acoustic signals, High rate, Miniature electronic equipment, Linear arrays, Circuit analysis, Switching, Signals, Pulses, Transducers, Hearing, Sonar, Lightweight

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE