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Global Positioning System PowerPoint Presentation
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Global Positioning System

Global Positioning System

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Global Positioning System

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  1. Global Positioning System

  2. Contents • Introduction • Applications • Basics of GPS • GPS Structure • GPS Errors • Advanced Technology in GPS

  3. Global Positioning System (GPS) • GPS is the Global positioning system is to determine your position on earth :east- west north-south and vertical. • The Global Positioning System (GPS) is a space-based satellite navigation system that provides location and time information in all weather, anywhere on or near the Earth

  4. It costs $750 million to operate annually. • IT is freely accessible to anyone with a GPS receiver. • GPS is controlled by the US Department of Defense (DOD).

  5. GPS receivers are now integrated in many mobile phones. APPLICATIONS OF GPS

  6. Now widely used in the civilian sector as well as military users • Surveying • Maritime • Airlines • And on and on…

  7. Global Positioning System in a taxicab.

  8. You don’t have GPS? Ha!! Ha!! Ha!! Hey!! What’s the way to Omaxe Mall?

  9. Basics Of GPS • If we send out a pulse of sound or radio waves then we can determine distance of object by dividing the time it took for reply by the speed of sound. • Distance = speed * time • GPS works on much the same principle. GPS satellite only transmit timing data pulse, GPS receive units, only receive.

  10. Transmitted Signals contains • It’s approximate position • Exact orbit location • Navigation signal

  11. Many GPS units show derived information such as direction and speed, calculated from position changes.

  12. Structure of GPS • The U.S. Air Force develops, maintains, and operates the space and control segments. • The GPS consists of three segments • Space Segment • Control Segment • User Segment

  13. Southern California Iceland We have GPS receivers operating all over the world. Holland Australia Hawaii Antarctica

  14. GPS Error sources • Satellite clock error • Receiver Clock Error • Tropospheric Error

  15. Advanced Technology in GPS Differential Global Positioning System (DGPS) Local Area augmentation system (LAAS) Wide Area augmentation system (WAAS) Nation Wide differential GPS (NDGPS) High accuracy nation wide differential GPS (HANDGPS)