Tag Archives: ATI

You decide – The Best Technical Training for You!

 

 

You can make a difference. Applied Technology Institute is scheduling new courses for September 2016 through July 2017. Please let us know which courses you would like to see on our schedule or brought to your facility.

·         If you have a group of 3 or more people, ATI can schedule an open enrollment course in your geographic area.

·         If you have a group of 8 or more, ATI can schedule a course on-site at your facility.

On-site training brings our experts to you — on your schedule, at your location. It also allows us to plan your training in advance and tailor classes directly to your needs.

You can help identify courses to suit your training needs and bring the best short courses to you! ATI courses can help you stay up-to-date with today’s rapidly changing technology.

Boost your career. Courses are led by world-class design experts. Learn from the proven best.

ATI courses by technical area:

Satellites & Space-Related courses

Acoustic & Sonar Engineering courses

Engineering & Data Analysis courses

Radar, Missiles and Combat Systems courses

Project Management and Systems Engineering courses

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Contact us: ATI@ATIcourses.com or (410) 956-8805


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Memorial Day 2016 Tribute – John McCain recounts fellow POWs’ astounding bravery in Vietnam

Applied Technology Institute (ATIcourses or ATI) is proud to support the US Defense Forces, with strong personal and corporate ties to the US Navy. This 1 1/2 minute video Memorial Day 2016 Tribute is worth viewing to remind us all of the sacrifices made to defend our freedom and way of life.

http://www.militarytimes.com/story/veterans/2016/05/27/mccain-memorial-day-video/85034226/

ATI Course Shines Light On Satellite Laser Communications

Applied Technology Institute (ATICourses) offers a variety of courses on Space & Satellite Technology.

As laser technology draw increasing attention from the satellite industry, Applied Technology Institute (ATIcourses) is ready with a specialized program designed for individuals interested in this new frontier in wireless communications. The course is aimed at engineers, scientists and other professionals grounded in traditional radio-frequency communications who want to be prepared as optical technology grows in prominence as a way to transmit data.

The program will provide an overview of the differences and similarities between laser- and RF-based communications. The class will train participants in how to design, implement and optimize laser communications systems, and will focus on the specific challenges laser-based communications systems must overcome to connect hardware in space and on the ground efficiently and reliably. Upcoming session is scheduled for April 28-30, 2014, in Columbia, MD.

The course will be taught by Dr. Hamid Hemmati, supervisor of the Optical Communications Group at NASA’s Jet Propulsion Laboratory (JPL), where he has worked since 1986. Before joining JPL, Dr. Hemmati worked at NASA’s Goddard Space Flight Center and the U.S. National Institute for Standards and Technology. He specializes in the use of laser technology for space-based communications and is the editor and author of two books about optical communications.

For further information about ATI’s satellite laser communications course, including registration and cost details, visithttp://www.aticourses.com/satellite_laser_communications.htm

About Applied Technology Institute (ATIcourses or ATI)

ATIcourses is a national leader in professional development seminars in the technical areas of space, communications, defense, sonar, radar, engineering, and signal processing. Since 1984, ATIcourses has presented leading-edge technical training to defense and NASA facilities, as well as DOD and aerospace contractors. ATI’s programs create a clear understanding of the fundamental principles and a working knowledge of current technology and applications. ATI offers customized on-site training at your facility anywhere in the United States, as well as internationally, and over 200 annual public courses in dozens of locations. ATI is proud to have world-class experts instructing courses. For more information, call 410-956-8805 or 1-888-501-2100 (toll free), or visit them on the web at www.ATIcourses.com.

Note: Accredited media are invited to attend for free.

 


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Sequestration and the real world

The Washington Post had an article on June 30, 2013 titled “They said the sequester would be scary.  Mostly, they were wrong.”  It said the effects were largely mitigated by political means and methods after all.

 

I just want to say that for us at ATI, the predictions of large cutbacks are mostly correct.  It has had a tremendously adverse effect with attendance at public courses down more than 40 %  People either do not have money for travel and/ or they do not have money for training.  Both training and travel are the first to be cut in a tight budget.  The story that best illustrates this came to me from a gentleman who, along with his colleague, had registered –and paid- to attend one of our courses last winter.  In the eleventh hour they had to withdraw as travel funding was no longer permitted.

 

I contacted him when the course was next being held to find out if they might be able to attend this time and the answer was “no”.  He elaborated, “They’ve even stopped cutting the grass (knee high is some places) and our restrooms only get cleaned twice a week.  Sequestration is hurting us badly.”

 

To this I responded, “Holy cow! Knee high grass.”

 

He came back with, “We could use a few cows.”

 

Please feel free to share your Sequestration story.


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ATI Instructor Releases A New Book On Wavelets + 25% discount!

ATI offers Wavelets: A Conceptual Practical Approach course on Jun 12-14, 2012 in Columbia, MD.  We thought our reader might be interested in the fact that our instructor Amir Nijami released a new book called Wavelets: A Concise Guide.  You can follow this link to purchase the book and receive 25% discount http://www.aticourses.com/Book_JHUPress.pdf

Introduced nearly three decades ago as a variable resolution alternative to the Fourier transform, awavelet is a short oscillatory waveform for analysis of transients. The discrete wavelet transformhas remarkable multi-resolution and energy-compaction properties. Amir-Homayoon Najmi’sintroduction to wavelet theory explains this mathematical concept clearly and succinctly.Wavelets are used in processing digital signals and imagery from myriad sources. They form thebackbone of the JPEG2000 compression standard, and the Federal Bureau of Investigation usesbiorthogonal wavelets to compress and store its vast database of fingerprints. Najmi provides themathematics that demonstrate how wavelets work, describes how to construct them, and discussestheir importance as a tool to investigate and process signals and imagery. He reviews key conceptssuch as frames, localizing transforms, orthogonal and biorthogonal bases, and multi-resolution.His examples include the Haar, the Shannon, and the Daubechies families of orthogonal andbiorthogonal wavelets.Our capacity and need for collecting and transmitting digital data is increasing at an astonishingrate. So too is the importance of wavelets to anyone working with and analyzing digital data.Najmi’s primer will be an indispensable resource for those in computer science, the physicalsciences, applied mathematics, and engineering who wish to obtain an in-depth understanding andworking knowledge of this fascinating and evolving field.

To receive a 25% discount, please send an email to ATI@ATIcourses.com requesting the discount form.


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Can You Pass the CSEP Exam?

Certified Systems Engineers Are In Demand

(RIVA, Md., March 2009) Just as you would not attempt a state bar exam without studying, you should not attempt the CSEP (Certified Systems Engineer Professional) exam without preparation. By taking a preparatory course, you can yield great benefits in performance, stress reduction and overall, greatly improve your chances of passing the exam.

While the economy is down, the demand for systems engineers is still growing–but supply is low. Last October, Jitu Desai of IBM said, “The demand for systems engineering management of complex programs is increasing. This is coupled with the new technologies that are entering the marketplace to make it both easier and more difficult to manage. We need new ways of managing design and development activities of major systems. This method includes access to global talent and skills, as well as the marketplace offerings that provide improved methods for collaborating innovations.”

To assist you in your career, the Applied Technology Institute (ATI) has added a CSEP preparation course to its curriculum. Systems engineering is a profession, practice and way of doing business that concentrates on the design and application of the whole system to produce a successful product or system.

The International Council on Systems Engineering (INCOSE) has established a Professional Certification Program to provide a formal method for recognizing the knowledge and experience of systems engineers. The INCOSE Certified Systems Engineering Professional (CSEP) rating is a more coveted milestone in the career of a systems engineer, demonstrating knowledge, education and experience and is of high value to systems organizations.

Test what you know. ATIcourses has posted samples from its CSEP Preparation class on its web site at:www.ATIcourses.com/sampler/CSEP_Preparation_CourseSampler.pdf
These materials include information on how to apply successfully for the CSEP, a study plan to pass the CSEP exam, sample questions to assess your skills and a guide to completing your application selected from a full two-day course CSEP Preparation sponsored by the Applied Technology Institute.
This two-day course walks you through the CSEP requirements and the INCOSE Handbook Version 3.1 to cover all topics on the CSEP exam. Interactive work and study plans, and sample examination questions will help you to prepare effectively for the exam. Participants complete the course with solid knowledge, a hard copy of the INCOSE Handbook, study plans, and a sample examination.

This course is currently scheduled as a public offering at several dates and locations: Your facility can request this course as an on-site presentation. The current schedule includes the following public dates open to all:


Mar 20-21, 2012 Columbia, MD

Apr 20-21, 2012 Orlando, FL

The instructor is Eric Honour, an international consultant and lecturer, who has a 38-year career of complex systems development & operation. He was Founder and former President of INCOSE. He has led the development of 18 major systems, including the Air Combat Maneuvering Instrumentation systems and the Battle Group Passive Horizon Extension System locations.

ATI, a leader in scientific and technical training since 1984, will be hosting the course. ATI specializes in training seminars for professionals working in radar, sonar, space systems, satellites and systems engineering. For more information contact Applied Technology Institute at (888) 501-2100 or register online atwww.ATIcourses.com.


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Do You Get Shaken and Stirred with MIL-STD-810G?

Negative Stiffness Vibration Isolator
Video Clip: Click to Watch
ATI’S MILITARY STANDARD 810G (MIL-STD-810G) TESTING COURSE

The course emphasizes topics you will use immediately. Suppliers to the military services protectively install commercial-off-the-shelf (COTS) equipment in our flight and land vehicles and in shipboard locations where vibration and shock can be severe

This four-day class will provide education in the purpose of each test, the equipment required to perform each test, and the methodology to correctly apply the specified test environments. Vibration and Shock methods will be covered together and will include an overview of Sine and Random Vibration as well as classical waveform shock testing, drop testing and Shock Response Spectrum Testing. Instrumentation, vibration equipment, control systems and fixture design will be covered.

Each climatic test will be discussed individually, focusing on requirements, origination, equipment required, test methodology and understanding of results. Class members will participate in a tour of a lab that daily performs the full spectrum of 810G tests. Class discussion will be supported by projected visuals and video clips.

Commencing with a review of basic vibrations, we will explore vibration measurements and analysis. We’ll compare sinusoidal vs. random vibration testing systems, specifications, standards and procedures. We will emphasize vibration and shock test fixture design, fabrication, experimental evaluation and usage. We will study shock measurement, shock response spectrum (SRS) and shock testing.

Climatic testing will be looked at in great detail, emphasizing required equipment and instrumentation, correct interpretation of specifications and hints to ensure that the tests are brought to a successful conclusion. We laboratory test the protected equipment (1) to assure twenty years equipment survival and possible combat, also (2) to meet commercial test standards, IEC documents, military standards such as STANAG or MIL-STD-810G, etc.

What you will learn:

• perform vibration, shock and climatic tests

• evaluate and select equipment to perform testing

• convert field measured data into a test program,

• interpret vibration and shock test requirements and results,

• supervise vibration, shock and climatic tests,

• specify and experimentally evaluate vibration and shock test fixtures

When you visit a test lab or review a test program, you will have a good understanding of the requirements and execution of dynamics and climatics tests and so be able to ask meaningful questions and understand laboratory personnel responses.

If you are in need of more technical training, then boost your career with the knowledge needed to provide better, faster, and cheaper solutions for sophisticated DoD and NASA systems. Why not take a short course instead?

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.

Course Outline, Samplers, and Notes

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 participant will also receive a copy of Wayne Tustin’s text ‘A Minimal-Mathematics Introduction to the Fundamentals of Random Vibration and Shock Testing, HALT, ESS & HASS, also Measurements, Analysis & Calibration’, including a CD containing a number of video clips pertaining to sine and random vibration and shock behavior and testing.

Please visit our website for more valuable information.

About ATI and the Instructor

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.

Steve Brenner has been working in the field of environmental simulation and reliability testing for over 30 years. Beginning in the late sixties with reliability and design verification testing on the Lunar Module, the Space Shuttle in the eighties, to semiconductor manufacturing equipment in the nineties, Mr. Brenner has always been involved with the latest techniques for verifying equipment integrity through testing.

Mr. Brenner began his career as an Environmental test engineer with Grumman Aerospace Corporation in New York, worked as design verification and reliability engineer for the Air Force, an Environmental Test Engineer for Lockheed Missiles and Space company, and spent 18 years with Kaiser Electronics in San Jose, where he managed the Environmental Test Lab and was involved with the design of hardware intended for severe environments. Mr. Brenner has been working as a consultant in the reliability testing field since 1996.

Times, Dates, and Locations

For the times, dates and locations of all of our short courses, please access the links below.

Nov 1-4, 2011 Cincinnatti, OH

Nov 14-17, 2011 Jupiter, FL

Dec 5-8, 2011 Santa Clarita, CA


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Do You Resonate with Shock, Noise and Vibration?

Negative Stiffness Vibration Isolator

 

Video Clip: Click to Watch

Two Short Courses from ATI on Vibration, Shock or Noise

in Vehicles, Devices, and Equipment

If you are concerned with vibration, shock or noise in vehicles, devices, and equipment; then Applied Technology Institute (ATI) short courses maybe for you.

Why not take a short course?

Our short courses are less than a week long and are designed to help you keep your professional knowledge up-to-date. They provide a practical overview of space and defense technologies which furnish a strong foundation for understanding the issues that must be confronted in the use, regulation and development of complex systems.

If you are test personnel who conduct or supervise or “contract out” vibration and shock tests, then take the three-day course fundamentals course. It also benefits design, quality and reliability specialists who interface with vibration and shock test activities.

If you have some prior acquaintance with vibration or noise fields, then you should sign up for the more advanced four day course. It emphasizes understanding of the relevant phenomena and concepts in order to enable the participants to address a wide range of practical problems insightfully.

See sections below for more details on these two short courses from ATI.

FUNDAMENTALS OF RANDOM VIBRATION & SHOCK TESTING

This three-day course is primarily designed for test personnel who conduct or supervise or “contract out” vibration and shock tests. It also benefits design, quality and reliability specialists who interface with vibration and shock test activities.

From this course you will obtain the ability to understand and communicate meaningfully with test personnel, perform basic engineering calculations and evaluate tradeoffs between test equipments’ and procedures.

Each student receives the instructor’s brand new, minimal-mathematics, minimal-theory hardbound text Random Vibration & Shock Testing, Measurement, Analysis & Calibration. This 444 page, 4-color book also includes a CDROM with video clips and animations.

What you will learn:

• How to plan, conduct and evaluate vibration and shock tests and screens.

• How to attack vibration and noise problems.

• How to make vibration isolation, damping and absorbers work for vibration and noise control.

• How noise is generated and radiated, and how it can be reduced.

VIBRATION & NOISE CONTROL

This course is intended for engineers and scientists concerned with the vibration reduction and quieting of vehicles, devices, and equipment. The course will provide guidance relevant to design, problem solving, and development of improvements.

It will emphasize understanding of the relevant phenomena and concepts in order to enable the participants to address a wide range of practical problems insightfully. The instructors will draw on their extensive experience to illustrate the subject matter with examples related to the participant’s specific areas of interest.

Although the course will begin with a review and will include some demonstrations, participants ideally should have some prior acquaintance with vibration or noise fields. Each participant will receive a complete set of course notes and the text Noise and Vibration Control Engineering, a $210 value.

What you will learn:

How to attack vibration and noise problems

What means are available for vibration and noise control?

How to make vibration isolation, damping, and absorbers work

How noise generated and radiated, and how it can be reduced?

Course Outline, Samplers, and Notes

Determine for yourself the value of these courses before you sign up.

• Fundamentals of Random Vibration & Shock Testing course slide sampler

• Vibration & Noise Control course slide sampler

Our other short courses are designed for individuals involved in planning, designing, building, launching, and operating space and defense systems. See our samples (See Slide Samples) on some of our courses.

Or check out the new ATI channel on YouTube.

After attending a 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

Since 1984, 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.

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.

Fundamentals of Random Vibration & Shock Testing course

Wayne Tustin has since 1995 been president of a specialized engineering school and consultancy he founded in Santa Barbara, CA. His BSEE degree is from the University of Washington, Seattle. He is a licensed Professional Engineer – Quality in the State of California. Wayne’s first encounter with vibration was at Boeing/Seattle, performing what later came to be called modal tests, on the XB-52 prototype of that highly reliable platform. Subsequently he headed field service and technical training for a manufacturer of electrodynamic shakers, before establishing another specialized school on which he left his name. Wayne has written several books and literally hundreds of articles dealing with practical aspects of vibration and shock measurement and testing.

Vibration & Noise Control course

Dr. Eric Ungar has specialized in research and consulting in vibration and noise for more than 40 years, published over 200 technical papers, and translated and revised Structure-Borne Sound. He has led short courses at the Pennsylvania State University for over 25 years and has presented numerous seminars worldwide. Dr. Ungar has served as President of the Acoustical Society of America, as President of the Institute of Noise Control Engineering, and as Chairman of the Design Engineering Division of the American Society of Mechanical Engineers. ASME honored him with its Trent-Crede Medal in Shock and Vibration. ASA awarded him the Per Bruel Gold Medal for Noise Control and Acoustics for his work on vibrations of complex structures, structural damping, and isolation.

Dr. James Moore has, for the past twenty years, concentrated on the transmission of noise and vibration in complex structures, on improvements of noise and vibration control methods, and on the enhancement of sound quality. He has developed Statistical Energy Analysis models for the investigation of vibrations and noise complex structures as submarines, helicopters, and automobiles and has been instrumental in the acquisition of corresponding data bases. He has participated in the development of active noise control systems, noise reduction coating and signal conditioning means, as well as in the presentation of numerous short courses and industrial training programs.

Times, Dates, and Locations

Fundamentals of Random Vibration & Shock Testing

Sep 20-22, 2011 Detroit, MI

Oct 4-6, 2011 Santa Clarita, CA

Nov 7-9, 2011 Acton, MA

Vibration & Noise Control

Sep 26-29, 2011 Boston, MA

Mar 12-15, 2012 Columbia, MD

Apr 30-May 3, 2012 Boston, MA


 


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Drone Fleets: The Countries That Possess Them And Potential For Robotic Wars

Despite some pretty disturbing news on UAV developments that are coming from China and a group of other countries U.S. remains the global leader in development, production and most importantly successful implementation of unmanned aircraft vehicles or drones.  However, there is a lot of speculation regarding the world’s expanding drone fleets and their potential for reducing the threshold for going to war.  Here is a list of known facts regarding this sensitive issue.

  1. USA is the main developer and manufacturer (however not exporter) of UAVs.  Near the top of the line, the Predator B, or MQ9-Reaper, manufactured by General Atomics Aeronautical Systems, costs about $10.5 million. By comparison, a single F-22 fighter jet costs about $150 million.

The new smaller models are currently developed.

  • Raytheon Missile Systems is in process of designing a 13lb Small Tactical Munition to be carried by smaller unmanned aircraft like Shadow, TigerShark, Hunter and Viking. The device is around 24 inches long and 4 inches around.
  • Northrop Grumman has come out with the Viper Strike, a gliding,GPS-aided laser-guided variant of the Northrop Grumman Brilliant Anti-Tank (BAT) munition which originally had a combinationacoustic and IR seeker. The Viper Strike is 36 inches long and only 5.5 inches in diameter.
  • Lockheed Martin has releasedthe Scorpion (21.5 inches in length, and 4.25 inches in diameter),which is adaptable to multiple launch platforms, including manned or unmanned systems.
  1. China is constantly increasing it’s development and production as well as export of drones.  At the most recent Zhuhai air show they revealed WJ-600 drone and than two dozen other Chinese models. Little is known about their actual abilities but the speed at which they have been developed highlights how U.S. military successes with drones have changed strategic thinking worldwide and spurred a global rush for unmanned aircraft.
  2. Israel, the second-largest drone manufacturer after the United States, has flown armed models, but few details are available.
  3. India announced this year that it is developing ones that will fire missiles and fly at 30,000 feet.
  4. Russia has shown models of drones with weapons, but there is little evidence that they are operational.
  5. Pakistan has said it plans to obtain armed drones from China, which has already sold the nation ones for surveillance.
  6. Iran last summer unveiled a drone that Iranian President Mahmoud Ahmadinejad called the “ambassador of death” but whose effectiveness is still unproven, according to military analysts.

China’s drone technology hasn’t reached the world’s first-class level, but the Chinese are catching up quickly. This is something we know for sure.

 


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

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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