This Maybe One Class You WANT to Blow Up in Your Face Monday, November 07, 2011

At ATI, the course IS the Bomb!!! Video Clip: Click to Watch Do you know how to evaluate the performance and vulnerability of explosives and propellants? This four-day course is designed for scientists, engineers and managers interested in the current state of explosive and propellant technology. After an introduction to shock waves, the current explosive technology […]
At ATI, the course IS the Bomb!!!
Video Clip: Click to Watch
Do you know how to evaluate the performance and vulnerability of explosives and propellants?
This four-day course is designed for scientists, engineers and managers interested in the current state of explosive and propellant technology. After an introduction to shock waves, the current explosive technology is described. Numerical methods for evaluating explosive and propellant sensitivity to shock waves are described and applied to vulnerability problems such as projectile impact and burning to detonation
This course is suited for scientists, engineers, and managers interested in the current state of explosive and propellant technology, and in the use of numerical modeling to evaluate the performance and vulnerability of explosives and propellants
Since 1984, the Applied Technology Institute (ATI) has provided leading-edge public courses and onsite technical training to DoD and NASA personnel, as well as contractors. Whether you are a busy engineer, a technical expert or a project manager, you can enhance your understanding of complex systems in a short time. You will become aware of the basic vocabulary essential to interact meaningfully with your colleagues. If you are in need of more technical training, why not take a short course? ATI short courses are less than a week long and are designed to help you keep your professional knowledge up-to-date. You can boost your career with the strong foundation for understanding the issues that must be confronted in the use and regulation of explosives and propellants. Course Outline, Samplers, and Notes Click on the course title below for more information. ATI’S EXPLOSIVES TECHNOLOGY & MODELING COURSE Click here now to see for yourself the value of this course before you sign up. What you will learn when you take this course:
  • What are Shock Waves and Detonation Waves?
  • What makes an Explosive Hazardous?
  • Where Shock Wave and Explosive Data is available
  • How to model Explosive and Propellant Performance
  • How to model Explosive Hazards and Vulnerability
  • How to use the furnished explosive performance and hydrodynamic codes
  • The current state of explosive and propellant technology
Participants will receive a copy of Numerical Modeling of Explosives and Propellants, Third Edition by Dr. Charles Mader, 2008 CRC Press. In addition, participants will receive an updated CD-ROM. About ATI and the Instructors Our mission here at ATI is to provide expert training and the highest quality professional development in space, communications, defense, sonar, radar, and signal processing. We are not a one-size-fits-all educational facility. Our short classes include both introductory and advanced courses. ATI’s instructors are world-class experts who are the best in the business. They are carefully selected for their ability to clearly explain advanced technology. Charles L. Mader, Ph.D., is a retired Fellow of the Los Alamos National Laboratory and President consulting company. Dr. Mader authored the monograph Numerical Modeling of Detonation, and also wrote four dynamic material property data volumes published by the University of California Press. His book and CD-ROM entitled Numerical Modeling of Explosives and Propellants, Third Edition, published in 2008 by CRC Press will be the text for the course. He is the author of Numerical Modeling of Water Waves, Second Edition, published in 2004 by CRC Press. He is listed in Who’s Who in America and Who’s Who in the World. He has consulted and guest lectured for public and private organizations in several countries. Dates and Locations The next dates and locations of this course are as follows: December 12-15, 2011 Albuquerque, NM September, 2012 MD/VA Area
 

ATI Wishes You a Happy Halloween!

Video Clip: Click to Watch Scary is NOT taking one of ATI’s Short Technical Classes Going back to school does not have to be terrifying like Halloween is. Just you and several like-minded professionals learning from a world class ghoul who loves to teach. Our short courses are designed for individuals involved in planning, designing, building, […]
Video Clip: Click to Watch
Scary is NOT taking one of ATI’s Short Technical Classes
Going back to school does not have to be terrifying like Halloween is. Just you and several like-minded professionals learning from a world class ghoul who loves to teach. Our short courses are designed for individuals involved in planning, designing, building, launching, and operating today’s frighteningly complex systems. The Applied Technology Institute (ATI) is not a one-size-fits-all educational facility. Our short classes include both introductory and advanced courses. Whether you are a busy engineer, a wicked witch or a project manager, you can enhance your understanding of scary space and defense systems in a short time. You will also become aware of the basic vocabulary essential to interact meaningfully with your disturbing colleagues. Course Outline, Samplers, and Notes Determine for yourself the value of our creepy courses before you sign up. See our samples (See Slide Samples) on some of our courses. Or check out the new ATI channel on YouTube. After attending the course you will receive a full set of detailed notes in blood from the class for future reference, as well as a certificate of completion. Please visit our website for more ghoulish information. About ATI and the Instructors ATI’s instructors are world-class experts who are the best in the business. They are carefully selected for their ability to clearly explain eerie and advanced technology. Our mission here at ATI is to provide expert training and the highest quality professional development in terrifying space, communications, defense, sonar, radar systems. Dates and Locations For the dates and locations of all of our short courses, please rattle the chains (links) below. Sincerely, The ATI Courses Team P.S. Call today for registration at 410-956-8805 or 888-501-2100 or access our website at www.ATIcourses.com. For general questions or inquisitions please email us at ATI@ATIcourses.com or Join, Link, Follow or Share with us at: Join us on Facebook Link to us on LinkedIn Follow us on Twitter Share with us on Slideshare P.P.S. What Happens at ATI does NOT Stay at ATI because our training helps you and your organization remain competitive in this changing and often horrifying world. Please feel free to call Mr. Jenkins personally to discuss your requirements and objectives. He will be glad to explain in gory detail what ATI can do for you, what it will cost, and what you can expect in results and future performance.

If You Want to BE a Rocket Scientist, Maybe You should LISTEN to one

Video Clip: Click to Watch Everything about Orbital Mechanics is Counterintuitive  Award-winning rocket scientist, Thomas S. Logsdon really enjoys teaching this short course titled, ATI’s Orbital Mechanics: Ideas and Insights, because everything about orbital mechanics is counterintuitive. In this comprehensive four day short course, Mr. Logsdon uses four hundred clever color graphics to clarify these and […]
Each student will receive a new personal GPS Navigator with multi-channel capability
Video Clip: Click to Watch
Everything about Orbital Mechanics is Counterintuitive 
Award-winning rocket scientist, Thomas S. Logsdon really enjoys teaching this short course titled, ATI’s Orbital Mechanics: Ideas and Insights, because everything about orbital mechanics is counterintuitive. In this comprehensive four day short course, Mr. Logsdon uses four hundred clever color graphics to clarify these and a dozen other puzzling mysteries associated with orbital mechanics. He also provides you with a few simple one-page derivations using real-world inputs to illustrate all the key concepts being explored. For example, did you know that if you fly your spacecraft into a 100-mile circular orbit and: • Put on the brakes, your spacecraft speeds up! • Mash down the accelerator, it slows down!! • Throw a banana peel out the window and 45 minutes later it will come back and slap you in the face!!! Why not take a short course? Since 1984, the Applied Technology Institute (ATI) has provided leading-edge public courses and onsite technical training to DoD and NASA personnel, as well as contractors. ATI short courses are less than a week long and are designed to help you keep your professional knowledge up-to-date. Our courses provide a practical overview of space and defense technologies which provide a strong foundation for understanding the issues that must be confronted in the use, regulation and development of complex systems. Whether you are a busy engineer, a technical expert or a project manager, you can enhance your understanding of satellite systems in a short time. You will become aware of the basic vocabulary essential to interact meaningfully with your colleagues. Determine for yourself the value of our courses before you sign up. Click here for more information on this course Click below to see slide samples from this course   Click below to see a video clip of this course on YouTube. What You Will Learn When You Take this Course: • How do we launch a satellite into orbit and maneuver it into a new location? • How do today’s designers fashion performance-optimal constellations of satellites swarming the sky? • How do planetary swing by maneuvers provide such amazing gains in performance? • How can we design the best multi-stage rocket for a particular mission? • What are libration point orbits? Were they really discovered in 1772? How do we place satellites into halo orbits circling around these empty points in space? • What are JPL’s superhighways in space? How were they discovered? How are they revolutionizing the exploration of space? After attending the course you will receive a full set of detailed notes from the class for future reference, as well as a certificate of completion. Each student will receive a new personal GPS Navigator with multi-channel capability. Please visit our website for more valuable information. About ATI and the Instructors Our mission here at ATI is to provide expert training and the highest quality professional development in space, communications, defense, sonar, radar, and signal processing. We are not a one-size-fits-all educational facility. Our short classes include both introductory and advanced courses. ATI’s instructors are world-class experts who are the best in the business. They are carefully selected for their ability to clearly explain advanced technology. For more than 30 years, Thomas S. Logsdon, has conducted broad ranging studies on orbital mechanics at McDonnell Douglas, Boeing Aerospace, and Rockwell International His key research projects have included Project Apollo, the Skylab capsule, the nuclear flight stage and the GPS radionavigation system. Mr. Logsdon has taught 300 short courses and lectured in 31 different countries on six continents. He has written 40 technical papers and journal articles and 29 technical books including Striking It Rich in Space, Orbital Mechanics: Theory and Applications, Understanding the Navstar, and Mobile Communication Satellites. Dates and Locations The next date and location of this short course is: Jan 9-12, 2012 Cape Canaveral,FL


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Beluga Whale, Mariachi Band And Some Fancy Wedding Dancing?

This video of a 9 year old beluga whale seemingly dancing to some mariachi music has surfaced recently.  It was shot during a wedding ceremony that took place in Mystic Aquarium in Connecticut.   The whale seemed to bob his head and follow the rhythm of the music.  A lot of people would like to believe […]
This video of a 9 year old beluga whale seemingly dancing to some mariachi music has surfaced recently.  It was shot during a wedding ceremony that took place in Mystic Aquarium in Connecticut.   The whale seemed to bob his head and follow the rhythm of the music.  A lot of people would like to believe that this is exactly what the whale was doing.  However, scientific research shows that whales can’t hear the music the way we do.  They simply feel the vibrations.   But, that in itself, is a powerful gift. The underwater environment of the world’s oceans is filled with a variety of sounds.  Most aquatic animals use sound for communications between members of their species.  The reason for this is that sounds propagates well in water and covers longer distances.   Whales depend on sound vibration for orientation. This ability is important for predators of the deep sea where light is greatly reduced.  They use sound waves in echolocation and this allows them to detect objects and organisms by means of sonar.  Whales, as well as many other marine animals, use a form of song to communicate through the water. A whale will use their songs most often as mating calls for the opposite sex. You can listen to the marine sounds around the world on their site.  Please click on the link below.  This is quite a unique experience to be able to hear underwater sounds across the globe. http://www.listentothedeep.com/acoustics/index2.php?web=lidoearth&lang=en   If you wish to enhance your understanding of the underlying principles of underwater and engineering acoustics needed to evaluate the impact of anthropogenic noise on marine life, please attend ATI’s Underwater Acoustics for Biologists and Conservation Managers course that will be presented on October 17-20, 2011 in Seattle, WA.


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What there is to Know Grows Exponentially Every Day

Thomas Edison and His Phonograph (1877) Video Clip: Click to Watch In a knowledge-based economy, your success is directly proportional to the amount of knowledge you possess As Thomas Edison observed, “We don’t know one millionth of one percent about anything.” At the rate at which new information is generated today, doesn’t it seem like the […]
Thomas Edison and His Phonograph (1877)
Thomas Edison and His Phonograph (1877)
Video Clip: Click to Watch
In a knowledge-based economy, your success is directly proportional to the amount of knowledge you possess
As Thomas Edison observed, “We don’t know one millionth of one percent about anything.” At the rate at which new information is generated today, doesn’t it seem like the gap between what you know and what you need is to know is growing at a dizzying pace? From submarine sonar to military radar to an orbiting spacecraft, you or your team must face the challenges of tomorrow with what you know today. With the practical knowledge gained from a short course, you can put textbook theories into real-world practice and expand your problem-solving and risk management skills significantly. Whether you are a busy engineer, a technical expert or a project manager, you can enhance your understanding of these complex systems in a short time. Since 1984, the Applied Technology Institute (ATI) has provided leading-edge public courses and onsite technical training to DoD and NASA personnel, as well as contractors. Our courses provide a practical overview of space and defense technologies which provide a strong foundation for understanding the issues that must be confronted in the use, regulation and development of complex systems. You will become aware of the basic vocabulary essential to interact meaningfully with your colleagues. Course Outline, Samplers, and Notes Our short courses are designed for individuals involved in planning, designing, building, launching, and operating space and defense systems. Determine for yourself the value of our courses before you sign up. See our samples (See Slide Samples) on some of our courses. Or check out the new ATI channel on YouTube. After attending the course you will receive a full set of detailed notes from the class for future reference, as well as a certificate of completion. Please visit our website for more valuable information.


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NASA’S YOUTUBE CHANNEL TO EDUCATE PUBLIC

About a year ago NASA created their own YouTube channel in order to provide the wider public with entertaining and informative way to learn about science, Earth, our Solar system and more. The videos are a collaboration of NASA’s astrophysicists, agency narrators and videographers. The videos are posted every Thursday around 4PM EDT. Future episodes […]
About a year ago NASA created their own YouTube channel in order to provide the wider public with entertaining and informative way to learn about science, Earth, our Solar system and more. The videos are a collaboration of NASA’s astrophysicists, agency narrators and videographers. The videos are posted every Thursday around 4PM EDT. Future episodes will focus on citizen science research; the search for new galaxies; how to watch this summer’s Perseid meteor shower; and the causes of recent wild weather events in the United States. The below episodes are the most recent. ZombieSat

Just when you thought it was safe to orbit Earth: Researchers say solar storms can turn satellites into zombies!

Power Of Sea Salt

Aquarius is the first NASA sensor to track ocean salinity from space, and aims to help uncover how the salinity of Earth’s oceans are effecting our climate.

Big Surprise

NASA’s Voyager probes have reached the edge of the solar system and found something surprising there–a froth of magnetic bubbles separating us from the rest of the galaxy.

Applied Technology Institute’s space, satellite, and aerospace engineering technical training classes deliver the highest quality professional development and continuing education training in the field of space, satellite, and aerospace engineering. Our industry leading instructors provide course attendees with both practical and technical knowledge necessary to excel in the field of satellite, aerospace, and space engineering. To view video of our courses please visit ATI YouTube channel.


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Do You Wish to Enhance Your Understanding of Unmanned Aircraft?

Where will you go to learn more about this exciting field? Video Clip: Click to Watch Worldwide commercial, government and military use of Unmanned Aircraft Systems (UAS) is expected to increase significantly in the future, placing unprecedented demands on scare radio resources. In fact, the Teal Group’s 2009 market study estimates that UAS spending will […]
MQ-9 Reaper on Approach for Landing
Where will you go to learn more about this exciting field?

Video Clip: Click to Watch

Worldwide commercial, government and military use of Unmanned Aircraft Systems (UAS) is expected to increase significantly in the future, placing unprecedented demands on scare radio resources. In fact, the Teal Group’s 2009 market study estimates that UAS spending will almost double over the next decade, from current worldwide UAS expenditures of $4.4 billion annually to $8.7 billion within a decade.

Since 1984, the Applied Technology Institute (ATI) has provided leading-edge public courses and onsite technical training to DoD and NASA personnel, as well as contractors. Whether you are a busy engineer, a technical expert or a project manager, you can enhance your understanding of complex systems in a short time. You will become aware of the basic vocabulary essential to interact meaningfully with your colleagues. Course Outline, Samplers, and Notes Determine for yourself the value of our UAS course before you sign up. Click here for UAS Course Slide Sampler After attending the course you will receive a full set of detailed notes from the class for future reference, as well as a certificate of completion. Please visit our website for more valuable information. About ATI and the Instructors Our mission here at ATI is to provide expert training and the highest quality professional development in space, communications, defense, sonar, radar, and signal processing. We are not a one-size-fits-all educational facility. Our short classes include both introductory and advanced courses. ATI’s instructors are world-class experts who are the best in the business. They are carefully selected for their ability to clearly explain advanced technology. Mr. Mark N. Lewellen, the ATI UAS instructor, has over twenty-five years with a wide variety of satellite, space, and aviation related projects. He is the Vice Chairman of a UAS group (in the United States) that is responsible for generating the technical basis for future UAS spectrum requirements. He was also chairman of an international group preparing for a World Radiocommunication Conference (WRC-2012) that may revise the international Radio Regulations governing the use of the radio-frequency spectrum.
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Underwater Acoustics for Biologists and Conservation Managers

Video Clip: Click to Watch A COMPREHENSIVE TUTORIAL DESIGNED   FOR ENVIRONMENTAL PROFESSIONALS Different species of whales and dolphins produce different sounds, such as songs, moans, clicks, roars, sighs, and many other characteristic noises. Each species is unique in its vocalizations. Scientists can listen for these sounds and track the different marine mammal species, and […]
Blue Whale was Tracked for Forty Three Days in North Atlantic Ocean
Video Clip: Click to Watch A COMPREHENSIVE TUTORIAL DESIGNED   FOR ENVIRONMENTAL PROFESSIONALS Different species of whales and dolphins produce different sounds, such as songs, moans, clicks, roars, sighs, and many other characteristic noises. Each species is unique in its vocalizations. Scientists can listen for these sounds and track the different marine mammal species, and sometimes even individual animals, while they are producing sound. This four-day course from the Applied Technology Institute (ATI) is designed for biologists, and conservation managers, who wish to enhance their understanding of the underlying principles of underwater and engineering acoustics needed to evaluate the impact of anthropogenic noise on marine life. This course provides a framework for making objective assessments of the impact of various types of sound sources. Critical topics are introduced through clear and readily understandable heuristic models and graphics. After taking this course you will have the knowledge to perform basic assessments of the impact of anthropogenic sources on marine life in specific ocean environments, and to understand the uncertainties in your assessments. UNDERWATER ACOUSTICS FOR BIOLOGISTS AND CONSERVATION MANAGERS: A COMPREHENSIVE TUTORIAL DESIGNED FOR ENVIRONMENTAL PROFESSIONALS What You Will Learn: What are the key characteristics of man-made sound sources and usage of correct metrics? How to evaluate the resultant sound field from impulsive, coherent and continuous sources. How are system characteristics measured and calibrated? What animal characteristics are important for assessing both impact and requirements for monitoring/and mitigation? Capabilities of passive and active monitoring and mitigation systems. Course Outline: • The Language of Physics and the Study of Motion This quick review of physics basics is designed to introduce acoustics to the neophyte. • What Is Sound and How To Measure Its Level The properties of sound are described, including the challenging task of properly measuring and reporting its level. • Digital Representation of Sound Today, almost all sound is recorded and analyzed digitally. This section focuses on the process by which analog sound is digitized, stored and analyzed. • Spectral Analysis: A Qualitative Introduction The fundamental process for analyzing sound is spectral analysis. This section will introduce spectral analysis and illustrate its application in creating frequency spectra and spectrograms. • Basics of Underwater Propagation and Use of Acoustic Propagation Models The fundamental principles of geometric spreading, refraction, boundary effects and absorption will be introduced and illustrated using propagation models. • Review of the Ocean Anthropogenic Noise Issue Current state of knowledge and key references summarizing scientific findings to date. • Basic Characteristics of Anthropogenic Sound Sources Impulsive (airguns, pile drivers, explosives), Coherent (sonars, acoustic modems, depth sounder. profilers), Continuous (shipping, offshore industrial activities). • Marine Wildlife of Interest & Their Characteristics Marine mammals, turtles, fish and invertebrates, Bioacoustics, hearing threshold, vocalization behavior. Supporting databases on seasonal density, distribution & movement. • Assessment of the Impact of Anthropogenic Sound Source-transmission-receiver approach. Level of sound as received by the wildlife, injury, behavioral response, TTS, PTS, Masking. Modeling Techniques, Field Measurements Assessment Methods. • Monitoring and Mitigation Techniques Passive Devices (fixed and towed systems), Active Devices, Matching Device Capabilities to Environmental Requirements (examples of passive and active localization, long term monitoring, fish exposure testing). • Overview of Current Research Efforts Click here for a slide sampler of this course Your Instructors for this Course: Dr. Adam S. Frankel is a senior scientist with Marine Acoustics, Inc., Arlington, VA and vice-president of the Hawai’i Marine Mammal Consortium. For the past 25 years, his primary research has focused on the role of natural sounds in marine mammals and the effects of anthropogenic sounds on the marine environment, especially the impact on marine mammals. A graduate of the College of William and Mary, Dr. Frankel received his M.S. and Ph.D. degrees from the University of Hawai’i at Manoa, where he studied and recorded the sounds of humpback whales. Post-doctoral work was with Cornell University’s Bioacoustics Research Program. Published research includes a recent paper on melon-headed whale vocalizations. Both scientist and educator, Frankel combines his Hawai’i – based research and acoustics expertise with teaching for Cornell University and other schools. He has advised numerous graduate students, all of whom make him proud. Frankel is a member of both the Society for the Biology of Marine Mammals and the Acoustical Society of America. Dr. William T. Ellison is president of Marine Acoustics, Inc., Middletown, RI. Dr. Ellison has over 45 years of field and laboratory experience in underwater acoustics spanning sonar design, ASW tactics, software models and biological field studies. He is a graduate of the Naval Academy and holds the degrees of MSME and Ph.D. from MIT. He has published numerous papers in the field of acoustics and is a co-author of the 2007 monograph Marine Mammal Noise Exposure Criteria: Initial Scientific Recommendations, as well as a member of the ASA Technical Working Group on the impact of noise on Fish and Turtles. He is a Fellow of the Acoustical Society of America and a Fellow of the Explorers Club. About ATI and the Instructors Since 1984, ATI has provided leading-edge public courses and onsite technical training. Whether you are a busy engineer, a technical expert or a project manager, you can enhance your understanding of complex systems in a short time. You will become aware of the basic vocabulary essential to interact meaningfully with your colleagues. Our mission here at ATI is to provide expert training and the highest quality professional development in space, communications, defense, sonar, radar, and signal processing. We are not a one-size-fits-all educational facility. Our short classes include both introductory and advanced courses. ATI’s instructors are world-class experts who are the best in the business. They are carefully selected for their ability to clearly explain advanced technology. Times, Dates, and Locations This course is currently scheduled for: October 17-20, 2011 in Seattle, WA For the times, dates and locations of all of our short courses, please access the links below. Sincerely, The ATI Courses Team P.S. Call today for registration at 410-956-8805 or 888-501-2100 or access our website at www.ATIcourses.com. For general questions please email us at ATI@ATIcourses.com.


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Did You “Hear” About the Underwater Acoustical Courses at ATI?

Video Clip: Click to Watch Maybe Being “Underwater” is a Good Thing?   Since 1984, the Applied Technology Institute (ATI) has provided leading-edge public courses and onsite technical training. Whether you are a busy engineer, a technical expert or a project manager, you can enhance your understanding of complex acoustical systems in a short time. […]
Acoustic simulation in a simple ocean environment
Video Clip: Click to Watch Maybe Being “Underwater” is a Good Thing?   Since 1984, the Applied Technology Institute (ATI) has provided leading-edge public courses and onsite technical training. Whether you are a busy engineer, a technical expert or a project manager, you can enhance your understanding of complex acoustical systems in a short time. Why not take a short course? ATI short courses are less than a week long and are designed to help you keep your professional knowledge up-to-date. Our courses provide a practical overview of acoustical technologies which provide a strong foundation for understanding the issues that must be confronted in the use, design and development of such complex systems. The three courses below present the fundamentals of underwater acoustic analysis and modeling, which deals with the translation of our physical understanding of sound in the sea into mathematical formulas solvable by computers. The courses provide a comprehensive treatment of all types of underwater acoustic models including environmental, propagation, noise, reverberation and sonar performance models. ATI’S UNDERWATER ACOUSTIC SYSTEM ANALYSIS COURSE This four-day course is based upon the text Underwater Acoustic System Analysis by William Burdic. The course presents the fundamentals of underwater acoustics, acoustic signal generation and acoustic signal processing in sufficient depth to permit the analysis and optimization of the performance of underwater systems. The sonar systems include a variety of applications including active and passive detection of surface and sub-surface targets, acoustic communications, acoustic intercept and underwater depth sounders. The course will stress the required skills and techniques for system analysis and performance prediction. Course Outline: • Introduction to Sonar Analysis: Historical overview; important acoustical properties and characteristics; Acoustical Waves; Reflections and Refraction in the Ocean; Units and db. • Sound Propagation In The Ocean: Sound Speed Variation in the ocean with variation in temperature, depth, salinity; Geographic Variation; Acoustic bottom and surface losses; absorption losses; Typical propagation modes; surface layer; shallow channels; deep channels; convergence zones; RAP; Typical Propagation Curves. • Ambient Noise in the Ocean: Sources of noise; shipping; wind generated; thermal; others; Noise spectra; ambient noise angular distribution and correlation properties; use of the spatial correlation function in system calculations. • Target Characteristics: Passive signature sources including propulsion, propeller, auxiliary machinery, flow-induced noise; effect of self-generated noise on sonar performance; Target strength for mono-static and bi-static sonars; Reverberation from volume, surface and bottom. • Acoustic Transducers: Definitions, piezo-ceramic properties; Hydrophone configurations; equivalent circuits and sensitivity; Projector configurations, equivalent circuits, efficiency and operation. • Beamforming-Spatial Filtering: Purpose and types of beamforming; spatial filters, multi-element arrays, array shading functions; beam steering; gain of arrays in distributed noise; angle estimation. • Performance Analysis-Statistical Basis: Hypothesis testing and optimum detection processors for active and passive systems; ROC curves; Estimation of time delay, frequency and bearing. • Performance Analysis: Practical examples; Examples illustrating the analysis of sonar systems; passive narrowband and broadband detection; passive angle tracking and ranging; High-power system detection for multipath reverberation and noise-limited conditions with Doppler Processing. Your Instructors for this Course: William Burdic received his BS and MS at Oregon State University. He served as an instructor in the Department of Electrical Engineering, Oregon State University when he joined Rockwell International. He has been engaged in the analysis and design of advanced radar and sonar systems. He is the author of two books “Radar Signal Analysis” and “Underwater Acoustic System Analysis”. James W. Jenkins joined the Johns Hopkins University Applied Physics Laboratory in 1970 and has worked in ASW and sonar systems analysis. He has worked with system studies and at-sea testing with passive and active systems. He is currently a senior physicist investigating improved signal processing systems, APB, own-ship monitoring, and SSBN sonar. He has taught sonar and continuing education courses since 1977 and is the Director of the Applied Technology Institute (ATI). ATI’S UNDERWATER ACOUSTICS 201 COURSE This two-day course explains how to translate our physical understanding of sound in the sea into mathematical formulas solvable by computers. It provides a comprehensive treatment of all types of underwater acoustic models including environmental, propagation, noise, reverberation and sonar performance models. Specific examples of each type of model are discussed to illustrate model formulations, assumptions and algorithm efficiency. Guidelines for selecting and using available propagation, noise and reverberation models are highlighted. Demonstrations illustrate the proper execution and interpretation of PC-based sonar models. Each student will receive a copy of Underwater Acoustic Modeling and Simulation by Paul C. Etter, in addition to a complete set of lecture notes. Your Instructor for this Course: Paul C. Etter has worked in the fields of ocean-atmosphere physics and environmental acoustics for the past thirty-five years supporting federal and state agencies, academia and private industry. He received his BS degree in Physics and his MS degree in Oceanography at Texas A&M University. Mr. Etter served on active duty in the U.S. Navy as an Anti-Submarine Warfare (ASW) Officer aboard frigates. He is the author or co-author of more than 180 technical reports and professional papers addressing environmental measurement technology, underwater acoustics and physical oceanography. Mr. Etter is the author of the textbook Underwater Acoustic Modeling and Simulation (3rd edition). Course Outline: • Introduction. Nature of acoustical measurements and prediction. Modern developments in physical and mathematical modeling. Diagnostic versus prognostic applications. Latest developments in inverse-acoustic sensing of the oceans. • The Ocean as an Acoustic Medium. Distribution of physical and chemical properties in the oceans. Sound-speed calculation, measurement and distribution. Surface and bottom boundary conditions. Effects of circulation patterns, fronts, eddies and fine-scale features on acoustics. Biological effects. • Propagation. Basic concepts, boundary interactions, attenuation and absorption. Ducting phenomena including surface ducts, sound channels, convergence zones, shallow-water ducts and Arctic half-channels. Theoretical basis for propagation modeling. Frequency-domain wave equation formulations including ray theory, normal mode, multipath expansion, fast field (wavenumber integration) and parabolic approximation techniques. Model summary tables. Data support requirements. Specific examples. • Noise. Noise sources and spectra. Depth dependence and directionality. Slope-conversion effects. Theoretical basis for noise modeling. Ambient noise and beam-noise statistics models. Pathological features arising from inappropriate assumptions. Model summary tables. Data support requirements. Specific examples. • Reverberation. Volume and boundary scattering. Shallow-water and under-ice reverberation features. Theoretical basis for reverberation modeling. Cell scattering and point scattering techniques. Bistatic reverberation formulations and operational restrictions. Model summary tables. Data support requirements. Specific examples. • Sonar Performance Models. Sonar equations. Monostatic and bistatic geometries. Model operating systems. Model summary tables. Data support requirements. Sources of oceanographic and acoustic data. Specific examples. • Simulation. Review of simulation theory including advanced methodologies and infrastructure tools. • Demonstrations. Guided demonstrations illustrate proper execution and interpretation of PC-based monostatic and bistatic sonar models. ATI’S UNDERWATER ACOUSTIC MODELING AND SIMULATION COURSE The subject of underwater acoustic modeling deals with the translation of our physical understanding of sound in the sea into mathematical formulas solvable by computers. This course provides a comprehensive treatment of all types of underwater acoustic models including environmental, propagation, noise, reverberation and sonar performance models. Specific examples of each type of model are discussed to illustrate model formulations, assumptions and algorithm efficiency. Guidelines for selecting and using available propagation, noise and reverberation models are highlighted. Problem sessions allow students to exercise PC-based propagation and active sonar models. Each student will receive a copy of Underwater Acoustic Modeling and Simulation by Paul C. Etter (a $250 value) in addition to a complete set of lecture notes. View course sample for this course Your Instructor for this Course: Paul C. Etter has worked in the fields of ocean-atmosphere physics and environmental acoustics for the past thirty years supporting federal and state agencies, academia and private industry. He received his BS degree in Physics and his MS degree in Oceanography at Texas A&M University. Mr. Etter served on active duty in the U.S. Navy as an Anti-Submarine Warfare (ASW) Officer aboard frigates. He is the author or co-author of more than 140 technical reports and professional papers addressing environmental measurement technology, underwater acoustics and physical oceanography. Mr. Etter is the author of the textbook Underwater Acoustic Modeling and Simulation. Course Outline: • Introduction. Nature of acoustical measurements and prediction. Modern developments in physical and mathematical modeling. Diagnostic versus prognostic applications. Latest developments in acoustic sensing of the oceans. • The Ocean as an Acoustic Medium. Distribution of physical and chemical properties in the oceans. Sound-speed calculation, measurement and distribution. Surface and bottom boundary conditions. Effects of circulation patterns, fronts, eddy and fine-scale features on acoustics. Biological effects. • Propagation. Observations and Physical Models. Basic concepts, boundary interactions, attenuation and absorption. Shear-wave effects in the sea floor and ice cover. Ducting phenomena including surface ducts, sound channels, convergence zones, shallow-water ducts and Arctic half-channels. Spatial and temporal coherence. Mathematical Models. Theoretical basis for propagation modeling. Frequency-domain wave equation formulations including ray theory, normal mode, multipath expansion, fast field and parabolic approximation techniques. New developments in shallow-water and under-ice models. Domains of applicability. Model summary tables. Data support requirements. Specific examples (PE and RAYMODE). References. Demonstrations. • Noise. Observations and Physical Models. Noise sources and spectra. Depth dependence and directionality. Slope-conversion effects. Mathematical Models. Theoretical basis for noise modeling. Ambient noise and beam-noise statistics models. Pathological features arising from inappropriate assumptions. Model summary tables. Data support requirements. Specific example (RANDI-III). References. • Reverberation. Observations and Physical Models. Volume and boundary scattering. Shallow-water and under-ice reverberation features. Mathematical Models. Theoretical basis for reverberation modeling. Cell scattering and point scattering techniques. Bistatic reverberation formulations and operational restrictions. Data support requirements. Specific examples (REVMOD and Bistatic Acoustic Model). References. • Sonar Performance Models. Sonar equations. Model operating systems. Model summary tables. Data support requirements. Sources of oceanographic and acoustic data. Specific examples (NISSM and Generic Sonar Model). References. • Modeling and Simulation. Review of simulation theory including advanced methodologies and infrastructure tools. Overview of engineering, engagement, mission and theater level models. Discussion of applications in concept evaluation, training and resource allocation. • Modern Applications in Shallow Water and Inverse Acoustic Sensing. Stochastic modeling, broadband and time-domain modeling techniques, matched field processing, acoustic tomography, coupled ocean-acoustic modeling, 3D modeling, and chaotic metrics. • Model Evaluation. Guidelines for model evaluation and documentation. Analytical benchmark solutions. Theoretical and operational limitations. Verification, validation and accreditation. Examples. • Demonstrations and Problem Sessions. Demonstration of PC-based propagation and active sonar models. Hands-on problem sessions and discussion of results.
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Synchronized Swimming for Submarines

The autonomous submarines at the Neutral Buoyancy Research Facility. Nature shows and Caribbean vacation commercials often depict a school of fish moving as a single entity to avoid obstacles and elude prey. Engineers hope to give unmanned mini-submarines, mini-helicopters and other autonomous vehicles the same coordinated movement. Derek Paley, assistant professor of aerospace engineering at […]
The autonomous submarines at the Neutral Buoyancy Research Facility.

The autonomous submarines at the Neutral Buoyancy Research Facility.

Nature shows and Caribbean vacation commercials often depict a school of fish moving as a single entity to avoid obstacles and elude prey. Engineers hope to give unmanned mini-submarines, mini-helicopters and other autonomous vehicles the same coordinated movement. Derek Paley, assistant professor of aerospace engineering at the University of Maryland’s A. James Clark School of Engineering, recently won a National Science Foundation Faculty Early Career Development (CAREER) Award for his proposal to study the coordinated movement of fish and apply it to unmanned submarines. Unmanned vehicles under multi-vehicle control could navigate more accurately and collect data more reliably than individual vehicles. The Navy plans to use a fleet of unmanned submarines to measure oceanic salinity, temperature and density—the factors that affect the speed of sound through water. These measurements, in turn, will help better predict sonar performance. Fish signal one another via visual cues and hydrodynamics (the movement of water). A line of tiny hair cells down each side of a fish helps them to sense the flow of the water around them. Paley is giving a fleet of mini-subs onboard cameras to mimic the visual sensing of fish. Also aboard each 3-foot-long sub is a tiny computer that can process the information from the cameras to determine the relative position of the subs around it and use this information to steer. Meanwhile, undergraduate student Alexander Leishman is developing sensors for Paley’s subs that will mimic the hair cells of the fish, to help the subs sense changes in the flow of the water. In lab space provided by biology professor Arthur Popper on the College Park campus, Paley has set up a network of cameras to monitor a school of giant danios (hardy freshwater fish about three inches long) and how they react when they are startled. When one or more fish in a school is startled, they trigger what is known as a “wave of agitation”—one fish takes evasive action, its immediate neighbors follow suit, followed by their neighbors, and so on. Paley takes the data captured by the cameras and uses it to create 3-d reconstructions of the fish movement. The models will help his research team better understand the information transmission among the fish and apply the same principles to the unmanned vehicles. “We’re developing modern engineering tools to quantitatively study this phenomenon,” Paley says. “We’re taking methods you learn as an engineering student and applying them to study biology.” The technology being built for the subs also can be applied to unmanned aerial vehicles. “We’re looking at planetary-scale applications for these vehicles; for instance, monitoring conditions inside hurricanes to improve forecasting models,” Paley said. “It’s important to fly lower—below 10,000 feet—to collect data where the air meets the water,” explains Paley. “Manned aircraft can’t fly that low inside a hurricane for safety reasons.” Paley directs the Collective Dynamics and Control Lab, where he supervises the research projects of twelve undergraduate engineering students who help him build the autonomous submarines. Paley also has six graduate students working on related research including Sachit Butail, a doctoral candidate who is developing an automatic tracking system to monitor the fish and produce data at an unprecedented rate and volume. This fall, Paley will add a neuroscience grad student to his team who will help design and conduct experiments to glean more from the communication behaviors of the fish.