A Detailed Study of Sonar Tomographic Imaging

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Abstract:

Sonar tomography is a technique to obtain a two-dimensional image of an underwater object using a sequence of one-dimensional images, or projections, of the object of interest. We discuss sonar tomography in a detailed manner and compare the performance of two important back-projection algorithms commonly used in tomography. The two processing techniques are applied to the imaging of relatively small underwater objects using high sonar frequencies, making use of simulated and experimental data. We also discuss system requirements, as well as the similarities and differences with radar applications. Ultimately, the performance of this underwater object imaging technique is determined by the availability of sufficiently high resolution projections andor sufficient coverage in object aspect.

Author(s):
Tran, H. T. ; Nguyen, B. ; Melino, R. ; Wood, S.
Author Organization(s):
DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION EDINBURGH (AUSTRALIA) MARITIME OPERATIONS DIV
Descriptive Note:
Research rept.
Supplementary Note:
Prepared in collaboration with DSTO Edinburgh's Electronic Warfare and Radar Division.
Pagination:
0033

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

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

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
DSTO-RR-0394, DODA-AR-015-647
Task Number(s):
07366
Monitor Series:
AR-015-647, DSTO/MOD
 Subject Terms
Joint Capability Areas:
JCA_2_Battlespace Awareness; JCA_2.2.2_Imagery Collection; JCA_2.2_Collection; JCA_6_Net Centric; JCA_6.1.2_Wireless Transmission; JCA_6.1_Information Transport; JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.2_Non-Kinetic Means; JCA_5_Command and Control; JCA_1_Force Support; JCA_5.3_Planning; JCA_6.3.3_Spectrum Management; JCA_1.4.2_Health Service Delivery; JCA_1.4_Force Support
Modernization Areas:
Quantum Science and Computing
Communities of Interest:
Ground and Sea Platforms
Descriptor(s):
*ACOUSTIC TOMOGRAPHY, *ALGORITHMS, *FOURIER TRANSFORMATION, *SONAR, *SONAR IMAGES, FREQUENCY MODULATION, FUNCTIONS(MATHEMATICS), HIGH FREQUENCY, RESOLUTION, SCATTERING, SYNTHETIC APERTURE RADAR, TIME SERIES ANALYSIS, TWO DIMENSIONAL, UNDERWATER ACOUSTICS, UNDERWATER OBJECTS
Field(s)/Group(s):
Numerical Mathematics, Acoustic Detection and Detectors
Keyword(s):
2DIFT BPA, 2DIFT(2 DIMENSIONAL INVERSE FT), ACTIVE SONAR, BPA(BACK PROJECTION ALGORITHMS), BRS(BRASS SHIMS), FOREIGN REPORTS, FT(FOURIER TRANSFORM), GENSUB MODEL, IFT(INVERSE FT), ISAR(INVERSE SAR), LFM(LINEAR FREQUENCY MODULATION), PSF(POINT SPREAD FUNCTIONS), SAR(SYNTHETIC APERTURE RADAR), SG(SOLID GRANITE), SONAR TOMOGRAPHY, TARGET IMAGING, TARGET SCATTERING
Report Date:
2013 Aug 01
Creation Date:
2014 Feb 05