Synthetic aperture sonar

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Synthetic aperture sonar (SAS) is a form of sonar in which sophisticated post-processing of sonar data are used in ways closely analogous to synthetic aperture radar. (Wikipedia.org)






Conferences related to Synthetic aperture sonar

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2023 Annual International Conference of the IEEE Engineering in Medicine & Biology Conference (EMBC)

The conference program will consist of plenary lectures, symposia, workshops and invitedsessions of the latest significant findings and developments in all the major fields of biomedical engineering.Submitted full papers will be peer reviewed. Accepted high quality papers will be presented in oral and poster sessions,will appear in the Conference Proceedings and will be indexed in PubMed/MEDLINE.


2020 22nd European Conference on Power Electronics and Applications (EPE'20 ECCE Europe)

Energy conversion and conditioning technologies, power electronics, adjustable speed drives and their applications, power electronics for smarter grid, energy efficiency,technologies for sustainable energy systems, converters and power supplies


2020 IEEE International Conference on Robotics and Automation (ICRA)

The International Conference on Robotics and Automation (ICRA) is the IEEE Robotics and Automation Society’s biggest conference and one of the leading international forums for robotics researchers to present their work.


2020 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)

All areas of ionizing radiation detection - detectors, signal processing, analysis of results, PET development, PET results, medical imaging using ionizing radiation


2020 IEEE Power & Energy Society General Meeting (PESGM)

The Annual IEEE PES General Meeting will bring together over 2900 attendees for technical sessions, administrative sessions, super sessions, poster sessions, student programs, awards ceremonies, committee meetings, tutorials and more


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Periodicals related to Synthetic aperture sonar

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Antennas and Propagation, IEEE Transactions on

Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.


Communications Magazine, IEEE

IEEE Communications Magazine was the number three most-cited journal in telecommunications and the number eighteen cited journal in electrical and electronics engineering in 2004, according to the annual Journal Citation Report (2004 edition) published by the Institute for Scientific Information. Read more at http://www.ieee.org/products/citations.html. This magazine covers all areas of communications such as lightwave telecommunications, high-speed data communications, personal communications ...


Electron Device Letters, IEEE

Publishes original and significant contributions relating to the theory, design, performance and reliability of electron devices, including optoelectronic devices, nanoscale devices, solid-state devices, integrated electronic devices, energy sources, power devices, displays, sensors, electro-mechanical devices, quantum devices and electron tubes.


Electron Devices, IEEE Transactions on

Publishes original and significant contributions relating to the theory, design, performance and reliability of electron devices, including optoelectronics devices, nanoscale devices, solid-state devices, integrated electronic devices, energy sources, power devices, displays, sensors, electro-mechanical devices, quantum devices and electron tubes.


Geoscience and Remote Sensing Letters, IEEE

It is expected that GRS Letters will apply to a wide range of remote sensing activities looking to publish shorter, high-impact papers. Topics covered will remain within the IEEE Geoscience and Remote Sensing Societys field of interest: the theory, concepts, and techniques of science and engineering as they apply to the sensing of the earth, oceans, atmosphere, and space; and ...


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Most published Xplore authors for Synthetic aperture sonar

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Xplore Articles related to Synthetic aperture sonar

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Nonlinear Simulations Of High Power Gyrotrons

IEEE Conference Record - Abstracts. 1991 IEEE International Conference on Plasma Science, 1991

None


Theoretical and experimental studies of cyclotron autoresonance Maser amplifiers

IEEE Conference Record - Abstracts. 1991 IEEE International Conference on Plasma Science, 1991

None


A correlation-based autofocus algorithm for coherent circular synthetic aperture sonar

EUSAR 2012; 9th European Conference on Synthetic Aperture Radar, 2012

Circular synthetic aperture sonar (CSAS) is a technique for generating imagery from scenes that have been ensonified by a sonar platform moving in a circular trajectory. While CSAS has many benefits over linear SAS from a resolution and target recognition standpoint, the generation of coherent, focused CSAS imagery without the use of a position reference in the form of a ...


Synthetic aperture sonar array gain measured at sea

EUSAR 2012; 9th European Conference on Synthetic Aperture Radar, 2012

A synthetic aperture sonar (SAS) typically consists of a directional transmitter and two vertically displaced receiving arrays, placed in a rigid frame. Many receivers permit an adequate area coverage rate and partly solve motion estimation issues. SAS motion estimation is crucial for image quality and is partly accomplished by using the ping-to-ping correlation obtained from overlapping elements. SAS gain depends ...


Kinetic Theory Of Electron cyclotron Resonance MASER with Asymmetry between electron beam and cavity

IEEE Conference Record - Abstracts. 1991 IEEE International Conference on Plasma Science, 1991

None


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Educational Resources on Synthetic aperture sonar

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IEEE-USA E-Books

  • Nonlinear Simulations Of High Power Gyrotrons

    None

  • Theoretical and experimental studies of cyclotron autoresonance Maser amplifiers

    None

  • A correlation-based autofocus algorithm for coherent circular synthetic aperture sonar

    Circular synthetic aperture sonar (CSAS) is a technique for generating imagery from scenes that have been ensonified by a sonar platform moving in a circular trajectory. While CSAS has many benefits over linear SAS from a resolution and target recognition standpoint, the generation of coherent, focused CSAS imagery without the use of a position reference in the form of a beacon has been considered a difficult problem due to motion and bathymetric constraints. An autofocus algorithm has been developed that utilizes many correlations between adjacent, narrow sub-aperture images to estimate a phase correction which can be used to form a focused, coherent CSAS image.

  • Synthetic aperture sonar array gain measured at sea

    A synthetic aperture sonar (SAS) typically consists of a directional transmitter and two vertically displaced receiving arrays, placed in a rigid frame. Many receivers permit an adequate area coverage rate and partly solve motion estimation issues. SAS motion estimation is crucial for image quality and is partly accomplished by using the ping-to-ping correlation obtained from overlapping elements. SAS gain depends on this ping-to-ping correlation. In this paper, theoretical impact of motion estimation accuracy and geometry on the SAS gain are formulated. Also, array gain is investigated using real data collected at sea with NURC's SAS.

  • Kinetic Theory Of Electron cyclotron Resonance MASER with Asymmetry between electron beam and cavity

    None

  • Applications of digital signal processing

    None

  • The C-SAR instrument for the GMES sentinel-1 mission

    The paper describes the C-SAR instrument for the GMES Sentinel-1 mission. After a brief introduction of the Sentinel-1 instrument requirements a design description of the overall C-SAR instrument as well as of its major subsystems (i.e. the SAR Antenna Subsystem (SAS) and the SES Electronic Subsystem (SES)), is given. The paper concludes with an overview on the predicted instrument performance.

  • A unified approach to hierarchical classification

    This paper examines a novel approach to hierarchical classification by coupling feature optimization and classifier design with feature pruning at each classification stage. We denote this method as a hierarchical sequential pruning classification (HiSPruC) strategy. The backbone of this algorithm is a recursive application of feature ranking and designing a classifier that matches the underlying good feature distribution derived from the surviving tokens. At each stage, we prune training tokens that fall into easily separable regions. We illustrate the advantage of this approach with a number of examples derived from an active sonar echo classification problem.

  • Imaging algorithms for a strip-map synthetic aperture sonar: minimizing the effects of aperture errors and aperture undersampling

    Imaging the sea floor using high-precision synthetic aperture sonar (SAS) techniques is at the stage where the efficiency and the robustness of the various imaging algorithms are of concern. There have been several block processing algorithms developed for relatively narrow-band-, narrow swath-, and narrow beamwidth synthetic aperture systems mainly for use by the synthetic aperture radar (SAR) community. These algorithms are summarized and their relevance to the slower speed of propagation, broad-band, broad swath-, and broad beam-width sonar equivalents are noted. Additional algorithms intended to ameliorate distortions injected by motion errors of the tow fish and medium turbulence are also assessed. One of the significant differences between the sonar and radar systems is that most synthetic aperture sonars travel faster than that required to meet the spatial sampling criterion and so the aperture is under- or insufficiently sampled. The digital spotlighting approach can be shown to reduce the grating-lobe images generated by this undersampling to a significant degree. The operational effectiveness of these various algorithms are shown on real data as collected by an ocean-going, boat-towed, rather than a rail or otherwise guided, sonar. What is important is that these algorithms in various combinations can ultimately produce near diffraction-limited imaging on real data. Typical results are shown when using the Kiwi-SAS to image point retro-reflectors (either as isolated targets or deployed in pairs) on a sea floor of bland silt. To date, no unclassified SAR or SAS uses the range or along-track spatial bandwidths employed by the Kiwi- SAS. The final SAS image resolution of 16 cm/spl times/5 cm is a considerably finer resolution than achieved by any SAR of equivalent carrier wavelength. The fine resolution is due to the correspondingly high spatial bandwidths covered by the system; that of range due to the chirp bandwidth coupled with the slow speed of sound in water and that of along-track due to the small real apertures employed. Access to this wide spatial bandwidth makes the applicability of normal SAR algorithms uncertain and we explore some of the trade-offs.

  • Further results from the SAMI synthetic aperture sonar

    This paper presents two techniques which may enhance the usefulness of synthetic aperture sonar, specifically multi-ping and Vernier techniques. A more efficient method of synthetic aperture processing is introduced, which was useful in processing the Vernier data in real-time. Results from the sea- trials held in May 1996 are presented and the authors conclude that multi-ping and Vernier techniques have brought benefits to the SAMI synthetic aperture system.



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