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The 10Th EAA International Symposium on Hydroacoustics Jastrzębia Góra, Poland, May 17 – 20, 2016
ARCHIVES OF ACOUSTICS Copyright c 2016 by PAN – IPPT Vol. 41, No. 2, pp. 355–373 (2016) DOI: 10.1515/aoa-2016-0038 The 10th EAA International Symposium on Hydroacoustics Jastrzębia Góra, Poland, May 17 – 20, 2016 The 10th EAA International Symposium on Hy- Dr. Christopher Jenkins: Backscatter from In- droacoustics, which is also the 33rd Symposium on • tensely Biological Seabeds – Benthos Simulation Hydroacoustics in memory of Prof. Leif Børnø orga- Approaches; nized in Poland, will take place from May 17 to 20, Prof. Eugeniusz Kozaczka: Technical Support for 2016, in Jastrzębia Góra. It will be a forum for re- • National Border Protection on Vistula Lagoon and searchers, who are developing hydroacoustics and re- Vistula Spit; lated issues. The Symposium is organized by the Prof. Andrzej Nowicki et al.: Estimation of Ra- Gdańsk University of Technology and the Polish Naval • dial Artery Reactive Response using 20 MHz Ul- Academy. trasound; The Scientific Committee comprises of the world – Prof. Jerzy Wiciak: Advances in Structural Noise class experts in this field, coming from, among others, • Germany, UK, USA, Taiwan, Norway, Greece, Russia, Reduction in Fluid. Turkey and Poland. The chairman of Scientific Com- All accepted papers will be published in the periodical mittee is Prof. Eugeniusz Kozaczka, who is the Pres- “Hydroacoustics”. ident of Committee on Acoustics Polish Academy of Sciences and Chairman of Technical Committee Hy- droacoustics of European Acoustics Association. Abstracts The Symposium will include invited lectures, struc- -
Acoustic Seabed and Target Classification Using Fractional
University of New Orleans ScholarWorks@UNO University of New Orleans Theses and Dissertations Dissertations and Theses 12-15-2006 Acoustic Seabed and Target Classification using rF actional Fourier Transform and Time-Frequency Transform Techniques Madalina Barbu University of New Orleans Follow this and additional works at: https://scholarworks.uno.edu/td Recommended Citation Barbu, Madalina, "Acoustic Seabed and Target Classification using rF actional Fourier Transform and Time-Frequency Transform Techniques" (2006). University of New Orleans Theses and Dissertations. 480. https://scholarworks.uno.edu/td/480 This Dissertation is protected by copyright and/or related rights. It has been brought to you by ScholarWorks@UNO with permission from the rights-holder(s). You are free to use this Dissertation in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s) directly, unless additional rights are indicated by a Creative Commons license in the record and/ or on the work itself. This Dissertation has been accepted for inclusion in University of New Orleans Theses and Dissertations by an authorized administrator of ScholarWorks@UNO. For more information, please contact [email protected]. Acoustic Seabed and Target Classication using Fractional Fourier Transform and Time-Frequency Transform Techniques A Dissertation Submitted to the Graduate Faculty of the University of New Orleans in partial fulllment of the requirements for the degree of Doctor of Philosophy in Engineering and Applied Sciences by Madalina Barbu B.S./MS, Physics, University of Bucharest, Romania, 1993 MS, Electrical Engineering, University of New Orleans, 2001 December, 2006 c 2006, Madalina Barbu ii To my family iii Acknowledgments I would like to express my appreciation to Dr. -
Interface Design for Sonobuoy Systems
Interface Design for Sonobuoy Systems by Huei-Yen Winnie Chen A thesis presented to the University of Waterloo in fulfillment of the thesis requirement for the degree of Master of Applied Science in Systems Design Engineering Waterloo, Ontario, Canada, 2007 ©Huei-Yen Winnie Chen 2007 AUTHOR'S DECLARATION I hereby declare that I am the sole author of this thesis. This is a true copy of the thesis, including any required final revisions, as accepted by my examiners. I understand that my thesis may be made electronically available to the public. ii Abstract Modern sonar systems have greatly improved their sensor technology and processing techniques, but little effort has been put into display design for sonar data. The enormous amount of acoustic data presented by the traditional frequency versus time display can be overwhelming for a sonar operator to monitor and analyze. The recent emphasis placed on networked underwater warfare also requires the operator to create and maintain awareness of the overall tactical picture in order to improve overall effectiveness in communication and sharing of critical data. In addition to regular sonar tasks, sonobuoy system operators must manage the deployment of sonobuoys and ensure proper functioning of deployed sonobuoys. This thesis examines an application of the Ecological Interface Design framework in the interface design of a sonobuoy system on board a maritime patrol aircraft. Background research for this thesis includes a literature review, interviews with subject matter experts, and an analysis of the decision making process of sonar operators from an information processing perspective. A work domain analysis was carried out, which yielded a dual domain model: the domain of sonobuoy management and the domain of tactical situation awareness address the two different aspects of the operator's work. -
Appendix A: Navy Activities Descriptions
Appendix A: Navy Activities Descriptions NORTHWEST TRAINING AND TESTING FINAL EIS/OEIS OCTOBER 2015 TABLE OF CONTENTS APPENDIX A NAVY ACTIVITIES DESCRIPTIONS .............................................................................. A-1 A.1 TRAINING ACTIVITIES ................................................................................................................. A-1 A.1.1 ANTI-AIR WARFARE TRAINING ............................................................................................................ A-1 A.1.1.1 Air Combat Maneuver ............................................................................................................... A-2 A.1.1.2 Missile Exercise (Air-to-Air) ....................................................................................................... A-3 A.1.1.3 Gunnery Exercise (Surface-to-Air) ............................................................................................. A-4 A.1.1.4 Missile Exercise (Surface-to-Air) ................................................................................................ A-5 A.1.2 ANTI-SURFACE WARFARE TRAINING ..................................................................................................... A-6 A.1.2.1 Gunnery Exercise Surface-to-Surface (Ship) .............................................................................. A-7 A.1.2.2 Missile Exercise Air-to-Surface .................................................................................................. A-8 A.1.2.3 High-speed Anti-Radiation Missile -
Matteo Bernasconi Phd Thesis
THE USE OF ACTIVE SONAR TO STUDY CETACEANS Matteo Bernasconi A Thesis Submitted for the Degree of PhD at the University of St Andrews 2012 Full metadata for this item is available in Research@StAndrews:FullText at: http://research-repository.st-andrews.ac.uk/ Please use this identifier to cite or link to this item: http://hdl.handle.net/10023/2580 This item is protected by original copyright This item is licensed under a Creative Commons Licence The use of active sonar to study cetaceans Matteo Bernasconi Submitted in partial fulfilment of the requirements for the degree of Doctor of Philosophy University of St Andrews July 2011 The use of active sonar to study cetaceans Matteo Bernasconi TABLE OF CONTENTS DECLARATIONS V ACKNOWLEDGMENTS VII ABSTRACT IX 1. INTRODUCTION 1 2. UNDERWATER ACTIVE ACOUSTIC 13 2.1 Historical notes 15 2.2 Sound: basic concepts 17 2.2.1 Sound propagation 18 2.2.2 Sound pressure and intensity 20 2.2.3 The decibel 21 2.2.4 Transmission Loss 22 2.2.5 Sound Speed 25 2.3 Transducers and beams 26 2.3.1 The beam pattern 28 2.3.2 The equivalent beam angle 29 2.3.3 Pulse and Ranging 30 2.4 Acoustic scattering 31 2.4.1 Target Strength 32 2.4.2 Target shape and orientation 33 2.4.3 Volume/area scattering coefficient 34 2.5 The sonar equation 35 3. CALIBRATION 39 3.1 The on‐axis sensitivity 41 3.2 Nearfield and Farfield 42 3.3 The TVG function 43 3.4 Standard experimental procedure 44 3.5 Calibration spheres 46 3.6 Calibration test of omnidirectional Sonar 47 3.6.1 Introduction 48 3.6.2 Method 49 3.6.3 Results & Discussion 51 3.6.4 Conclusion 57 4. -
Displaying Bioacoustic Directional Information from Sonobuoys Using “Azigrams”
Displaying bioacoustic directional information from sonobuoys using “azigrams” Aaron M. Thode,1,a) Taiki Sakai,2,b) Jeffrey Michalec,3 Shannon Rankin,3 Melissa S. Soldevilla,4 Bruce Martin,5 and Katherine H. Kim6 1Marine Physical Laboratory, Scripps Institution of Oceanography, University of California San Diego, La Jolla, California 92093-0238, USA 2Lynker Technologies, LLC, under contract to the Southwest Fisheries Science Center, NMFS/NOAA, La Jolla, California 92037, USA 3Southwest Fisheries Science Center, NMFS/NOAA, La Jolla, California 92037, USA 4Southeast Fisheries Science Center, NMFS/NOAA, 75 Virginia Beach Drive, Miami, Florida 33149, USA 5JASCO Applied Sciences, 32 Troop Avenue, Suite 202, Dartmouth, Nova Scotia, B3B 1Z1, Canada 6Greeneridge Sciences, Inc., 90 Arnold Place, Suite D, Santa Barbara, California 93117, USA (Received 16 November 2018; revised 22 May 2019; accepted 5 June 2019; published online 10 July 2019) The AN/SSQ-53 Directional Frequency Analysis and Recording (DIFAR) sonobuoy is an expend- able device that can derive acoustic particle velocity along two orthogonal horizontal axes, along with acoustic pressure. This information enables computation of azimuths of low-frequency acous- tic sources from a single compact sensor. The standard approach for estimating azimuth from these sensors is by conventional beamforming (i.e., adding weighted time series), but the resulting “cardioid” beampattern is imprecise, computationally expensive, and vulnerable to directional noise contamination for weak signals. Demonstrated here is an alternative multiplicative processing scheme that computes the “active intensity” of an acoustic signal to obtain the dominant direction- ality of a noise field as a function of time and frequency. This information is conveniently displayed as an “azigram,” which is analogous to a spectrogram, but uses color to indicate azimuth instead of intensity. -
A Review on Deep Learning-Based Approaches for Automatic Sonar Target Recognition
electronics Review A Review on Deep Learning-Based Approaches for Automatic Sonar Target Recognition Dhiraj Neupane and Jongwon Seok * Department of Information and Communication Engineering, Changwon National University, Changwon-si, Gyeongsangnam-do 51140, Korea; [email protected] * Correspondence: [email protected] Received: 13 October 2020; Accepted: 19 November 2020; Published: 22 November 2020 Abstract: Underwater acoustics has been implemented mostly in the field of sound navigation and ranging (SONAR) procedures for submarine communication, the examination of maritime assets and environment surveying, target and object recognition, and measurement and study of acoustic sources in the underwater atmosphere. With the rapid development in science and technology, the advancement in sonar systems has increased, resulting in a decrement in underwater casualties. The sonar signal processing and automatic target recognition using sonar signals or imagery is itself a challenging process. Meanwhile, highly advanced data-driven machine-learning and deep learning-based methods are being implemented for acquiring several types of information from underwater sound data. This paper reviews the recent sonar automatic target recognition, tracking, or detection works using deep learning algorithms. A thorough study of the available works is done, and the operating procedure, results, and other necessary details regarding the data acquisition process, the dataset used, and the information regarding hyper-parameters is presented in -
SOCAL 2011-2012 Aerial Surveys
Performed and submitted for the U.S. Navy's Southern California Range Complex 2012 Annual Monitoring Report AERIAL SURVEYS CONDUCTED IN THE SOCAL OPAREA FROM 01 AUGUST 2011 TO 31 JULY 2012 Photo by B. Würsig, taken under NMFS permit 14451 Prepared for Commander, U.S. Pacific Fleet, Pearl Harbor, Hawaii Submitted to Naval Facilities Engineering Command Southwest (NAVFAC SW), EV5 Environmental, San Diego, CA, 92132 Contract # N62470-10-D-3011 Prepared by HDR Inc. San Diego, California 1 August 2012 Performed and submitted for the U.S. Navy's Southern California Range Complex 2012 Annual Monitoring Report Citation for this report is as follows: Smultea, M.A., C. Bacon, T.F. Norris, and D. Steckler. 2012. Aerial surveys conducted in the SOCAL OPAREA from 01 August 2011 to 31 July 2012. Prepared for Commander, U.S. Pacific Fleet, Pearl Harbor, HI. Submitted to Naval Facilities Engineering Command Southwest (NAVFAC SW), EV5 Environmental, San Diego, 92132 under Contract No. N62470-10-D-3011 issued to HDR, Inc., San Diego, CA. Submitted August 2012. Cover Photo: Gray whales (Eschrichtius robustus), photographed with a telephoto lens from the Partenavia fixed-wing aircraft during a winter 2012 SOCAL aerial monitoring survey. Photo by B. Würsig under NMFS permit 14451. Performed and submitted for the U.S. Navy's Southern California Range Complex 2012 Annual Monitoring Report Aerial Surveys Conducted from 01 August 2011 to 31 July 2012 Final Technical Report Table of Contents ACRONYMS AND ABBREVIATIONS .................................................................................... -
Bistatic Sonobuoy Deployment Strategies for Detecting Stationary and Mobile Underwater Targets
Bistatic Sonobuoy Deployment Strategies for Detecting Stationary and Mobile Underwater Targets Mumtaz Karatas Emily Craparo (1) Industrial Engineering Department Department of Operations Research Naval Academy, National Defense University Naval Postgraduate School Istanbul, 34940, TURKEY Monterey, CA 93943, USA [email protected] [email protected] (2) Bahcesehir University Istanbul, 34353, TURKEY Gülşen Akman Industrial Engineering Department Kocaeli University Kocaeli, 41380, TURKEY [email protected] ABSTRACT The problem of determining effective allocation schemes of underwater sensors for surveillance, search, detection, and tracking purposes is a fundamental research area in military OR. Among the various sensor types, multistatic sonobuoy systems are a promising development in submerged target detection systems. These systems consist of sources (active sensors) and receivers (passive sensors), which need not be collocated. A multistatic sonobuoy system consisting of a single source and receiver is called a bistatic system. The sensing zone of this fundamental system is defined by Cassini ovals. The unique properties and unusual geometrical profile of these ovals distinguish the bistatic sensor allocation problem from conventional sonar placement problems. This study is aimed at supporting decision makers in making the best use of bistatic sonobuoys to detect stationary and mobile targets transiting through an area of interest. We use integral geometry and geometric probability concepts to derive analytic expressions for the optimal source and receiver separation distances to maximize the detection probability of a submerged target. We corroborate our analytic results using Monte Carlo simulation. Our approach constitutes a valuable “back of the envelope” method for the important and difficult problem of analyzing bistatic sonar performance. -
2 Description of Proposed Action and Alternatives
2 Description of Proposed Action and Alternatives NORTHWEST TRAINING AND TESTING FINAL EIS/OEIS OCTOBER 2015 TABLE OF CONTENTS 2 DESCRIPTION OF PROPOSED ACTION AND ALTERNATIVES ..........................................................2-1 2.1 DESCRIPTION OF THE NORTHWEST TRAINING AND TESTING STUDY AREA ..................................................2-2 2.1.1 DESCRIPTION OF THE OFFSHORE AREA ................................................................................................... 2-5 2.1.1.1 Air Space ..................................................................................................................................... 2-5 2.1.1.2 Sea and Undersea Space ............................................................................................................. 2-5 2.1.2 DESCRIPTION OF THE INLAND WATERS ................................................................................................... 2-7 2.1.2.1 Air Space ..................................................................................................................................... 2-7 2.1.2.2 Sea and Undersea Space ............................................................................................................. 2-7 2.1.3 DESCRIPTION OF THE WESTERN BEHM CANAL, ALASKA............................................................................. 2-9 2.2 PRIMARY MISSION AREAS .......................................................................................................... 2-12 2.2.1 ANTI-AIR WARFARE ......................................................................................................................... -
Defense Applications of Acoustic Signal Processing
Defense Applications of Acoustic Signal Processing Brian G. Ferguson Acoustic signal processing for enhanced situational awareness during Address: military operations on land and under the sea. Defence Science and Technology (DST) Introduction and Context Group – Sydney Warfighters use a variety of sensing technologies for reconnaissance, intelligence, Department of Defence and surveillance of the battle space. The sensor outputs are processed to extract Locked Bag 7005 tactical information on sources of military interest. The processing reveals the Liverpool, New South Wales 1871 presence of sources (detection process) in the area of operations, their identities Australia (classification or recognition), locations (localization), and their movement histo- Email: ries through the battle space (tracking). This information is used to compile the [email protected] common operating picture for input to the intelligence and command decision processes. Survival during conflict favors the side with the knowledge edge and superior technological capability. This article reflects on some contributions to the research and development of acoustic signal-processing methods that benefit warf- ighters of the submarine force, the land force, and the sea mine countermeasures force. Examples are provided of the application of the principles and practice of acoustic system science and engineering to provide the warfighter with enhanced situational awareness. Acoustic systems are either passive, in that they exploit the acoustic noise radiated -
Canada Gouvernementaux Canada 1
Public Works and Government Services Travaux publics et Services 1 Canada gouvernementaux Canada 1 RETURN BIDS TO: Title - Sujet RETOURNER LES SOUMISSIONS À: MULTISTATIC ACTIVE SONAR EMPLOYMENT Bid Receiving Public Works and Government Solicitation No. - N° de l'invitation Date Services Canada/Réception des soumissions W7707-135646/A 2012-11-27 Travaux publics et Services gouvernementaux Client Reference No. - N° de référence du client GETS Ref. No. - N° de réf. de SEAG Canada W7707-13-5646 PW-$HAL-210-8840 1713 Bedford Row Halifax, N.S./Halifax, (N.É.) File No. - N° de dossier CCC No./N° CCC - FMS No./N° VME B3J 1T3 HAL-2-69288 (210) Bid Fax: (902) 496-5016 Solicitation Closes - L'invitation prend finTime Zone at - à 02:00 PM Fuseau horaire Atlantic Standard Time on - le 2012-12-13 AST LETTER OF INTEREST F.O.B. - F.A.B. LETTRE D'INTÉRÊT Plant-Usine: Destination: 9 Other-Autre: Address Enquiries to: - Adresser toutes questions à: Buyer Id - Id de l'acheteur Thorpe, Susan hal210 Telephone No. - N° de téléphone FAX No. - N° de FAX (902) 496-5191 ( ) (902) 496-5016 Destination - of Goods, Services, and Construction: Destination - des biens, services et construction: DEPARTMENT OF NATIONAL DEFENCE DRDC ATLANTIC 9 GROVE STREET DARTMOUTH NOVA SCOTIA B3A 3C5 Canada Comments - Commentaires Instructions: See Herein Instructions: Voir aux présentes Vendor/Firm Name and Address Raison sociale et adresse du fournisseur/de l'entrepreneur Delivery Required - Livraison exigée Delivery Offered - Livraison proposée SEE HEREIN Vendor/Firm Name and Address Raison sociale et adresse du fournisseur/de l'entrepreneur Telephone No.