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Passive Sonar Loralee Williams UNCLASSIFIED.

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Presentation on theme: "Passive Sonar Loralee Williams UNCLASSIFIED."— Presentation transcript:

1 Passive Sonar Loralee Williams UNCLASSIFIED

2 UNCLASSIFIED

3 UNCLASSIFIED

4 UNCLASSIFIED

5 UNCLASSIFIED

6 Topics What is sonar Snell’s Law Factors for ranges/how it is measured
Military history of sonar Passive sonar - types -how it is used UNCLASSIFIED

7 Sonar is actually not a word but an acronym
What is sonar? Sonar is actually not a word but an acronym SOund Navigation And Ranging UNCLASSIFIED

8 Sound is LAZY. Snell’s Law
It wants to take the slowest route possible. Example: Thunder and Lightning UNCLASSIFIED

9 Temperature Depth/Pressure Salinity Factors for Ranges.
(11.25 × temperature (in °F)) + ( × depth (in feet)) + salinity (in parts-per-thousand ) UNCLASSIFIED

10 Expendable Bathythermograph (XBT)
UNCLASSIFIED

11 XBT Drop UNCLASSIFIED

12 Sonar and the Military World War I passive systems to locate submarines World War II- saw the first active sonar systems 1945- sonobuoys UNCLASSIFIED

13 Passive Sonar UNCLASSIFIED

14 Types of Passive Sonar AN/SQS-53C Hull Mounted Sonar
AN/SQR-19 TowedArray Sonar AN/SQQ-28 LAMPS MK III Sonobuoy Processing System AN/AQS-13F Dipping Sonar Undersea Surveillance System (IUSS) UNCLASSIFIED

15 A sound wave turned into a digital picture.
UNCLASSIFIED

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18 What can be determined with passive sonar?
Blade rate Shaft rate # of blades Cylinder firing rate # of cylinders Power plant Turbine rate ‘Fog horns’ UNCLASSIFIED

19 Waterfall Display Power Plant 50/60 HZ Engine UNCLASSIFIED

20 BIG TROUBLE!!!!!!!!!!! UNCLASSIFIED

21 Review What is sonar Snell’s Law Factors for ranges/how it is measured
The military history of sonar Passive sonar - types -how it is used UNCLASSIFIED

22 Work cited Basic Sonar System." Federation of American Scientists. 18 Apr <http://www.fas.org/man/dod-101/navy/docs/es310/asw_sys/asw_sys.htm>. "MMAD - Products - Kaon Ltd." Home - Kaon Ltd. 19 Apr <http://www.kaon.co.uk/mmad.asp>. "NOAA/AOML UOTC What is an XBT?" University of North Carolina Wilmington. 20 Apr <http://www.uncwil.edu/CMSR/capefear/tech/XBT.htm>. "Refraction and Snell's Law." 12 Apr <http://www.ndt-ed.org/EducationResources/CommunityCollege/Ultrasonics/Physics/refractionsnells.htm>. "Review Submarine Simulation." Easynet Connect - Quality Business Internet Access. 15 Apr <http://easyweb.easynet.co.uk/~ianboys/688rev.htm>. "Sonar -." Wikipedia, the free encyclopedia. 17 Apr. 2009 <http://en.wikipedia.org/wiki/Sonar>. "Torpedo Hit (ABC Science)." ABC.net.au. 21 Apr <http://www.abc.net.au/science/articles/2005/09/01/ htm>. "Understanding Sonar." The U.S. Navy. 15 Apr <http://www.navy.mil/oceans/sonar.html>.


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