Prototype Sparse Arrays for 3D Sonar Imaging System

reportActive / Technical Report | Accession Number: ADA510094 | Open PDF

Abstract:

A three dimensional sonar imaging system is under development for use by Navy divers for mine-field reconnaissance and mine-hunting systems. These divers require a small, low power, lightweight acoustic imaging system with high resolution for examining and disposing of underwater ordinance. Sparse array technology is being investigated to develop a sonar requiring the minimal number of signal processing channels while maintaining the beamwidth and sidelobe structure required for high resolution imaging. Beamwidth and sidelobe structure are examined as a function of transducer element count, channel bandwidth, and element location when optimized using various cost functions. Test results for a prototype line array evaluated in the NUWC Acoustic Test Facility are reported.

Author(s):
Impagliazzo, John ; Kay, Steven ; Chiang, Alice M. ; Broadstone, Steven R.
Author Organization(s):
NAVAL UNDERSEA WARFARE CENTER DIV NEWPORT RI
Supplementary Note:
Prepared in collaboration with Signal Processing Systems, Middletown, RI and Teratech Corp., Burlington, MA.
Pagination:
0008

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Monitor Series:
DARPA/ATO
 Subject Terms
Joint Capability Areas:
JCA_2_Battlespace Awareness; JCA_2.2.2_Imagery Collection; JCA_2.2_Collection; JCA_6_Net Centric; JCA_6.1_Information Transport; JCA_8_Building Partnerships
Modernization Areas:
Microelectronics
Communities of Interest:
Sensors
Descriptor(s):
*UNDERWATER EQUIPMENT, *SONAR IMAGES, *MINEFIELDS, *ACOUSTIC IMAGES, *MINE HUNTING, THREE DIMENSIONAL, BROADBAND, LIGHTWEIGHT, TRANSDUCERS, RECONNAISSANCE, SIDELOBES, HIGH RESOLUTION, PROTOTYPES, NAVAL PERSONNEL, SCUBA DIVERS, SIGNAL PROCESSING, LOW POWER
Field(s)/Group(s):
Undersea and Antisubmarine Warfare, Acoustic Detection and Detectors
Report Date:
2009 Jan 01
Creation Date:
2009 Dec 16