Accession Number : ADD009184

Title :   Measurement and Compensation System for Beam Forming Array.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Meland,Clifford L ; Booth,Newell O

Report Date : 17 Nov 1981

Pagination or Media Count : 10

Abstract : An apparatus for determining the bearing of an acoustic source from a selected location in an acoustic environment includes a plurality of discrete acoustic sensor elements and a flexible member, having first and second ends, which may be deployed in a linear configuration in the environment. The sensor elements are attached along the flexible member in spaced apart relationship, one of the elements, comprising a lead element, being closer to the first end than any of the other elements. A motion measuring device is coupled to the lead element when the flexible member is deployed in the environment to generate signals which indicate the velocity of the lead sensor element in the environment. A processor, having an input which is limited to lead element velocity signals, generates estimates of the positions of respective sensor elements when the flexible member is deployed in the environment at the selected location, and beam steering equipment, coupled to the processor steers an acoustic detection beam in response to the position estimates to determine the bearing of the acoustic signal source, the acoustic detection beam comprising the combined detection capabilities of the sensor elements. (Author)

Descriptors :   *Patents, *Towed sonar, *Sonar arrays, Linear arrays, Acoustic beams, Acoustic detection, Sound generators, Beam steering, Acoustic detectors, Beam forming, Measurement, Compensation, Environments

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE