1 / 22

Passive Sonar

Passive Sonar. Loralee Williams. UNCLASSIFIED. UNCLASSIFIED. UNCLASSIFIED. UNCLASSIFIED. UNCLASSIFIED. Topics. What is sonar Snell’s Law Factors for ranges/how it is measured M ilitary history of sonar Passive sonar - types -how it is used. UNCLASSIFIED. What is sonar?.

artan
Download Presentation

Passive Sonar

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

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

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

  9. Factors for Ranges. • Temperature • Depth/Pressure • Salinity 4388 + (11.25 × temperature (in °F)) + (0.0182 × 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- 1915 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

  16. UNCLASSIFIED

  17. UNCLASSIFIED

  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. 2009 <http://www.fas.org/man/dod-101/navy/docs/es310/asw_sys/asw_sys.htm>. • "MMAD - Products - Kaon Ltd." Home - Kaon Ltd. 19 Apr. 2009 <http://www.kaon.co.uk/mmad.asp>. • "NOAA/AOML UOTC What is an XBT?" University of North Carolina Wilmington. 20 Apr. 2009 <http://www.uncwil.edu/CMSR/capefear/tech/XBT.htm>. • "Refraction and Snell's Law." 12 Apr. 2009 <http://www.ndt-ed.org/EducationResources/CommunityCollege/Ultrasonics/Physics/refractionsnells.htm>. • "Review - 688 Submarine Simulation." Easynet Connect - Quality Business Internet Access. 15 Apr. 2009 <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. 2009 <http://www.abc.net.au/science/articles/2005/09/01/1448475.htm>. • "Understanding Sonar." The U.S. Navy. 15 Apr. 2009 <http://www.navy.mil/oceans/sonar.html>.

More Related