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Ppt local tracking and gps

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Ppt local tracking and gps

  1. 1. LOCATION TRACKING (LT) & GLOBAL POSITIONING SYSTEMS (GPS)
  2. 2. AGENDA <ul><li>Introduction to LT & GPS </li></ul><ul><li>Necessity of technology </li></ul><ul><li>Architecture and design </li></ul><ul><li>Functionality </li></ul><ul><li>Utilities and Applications </li></ul><ul><li>Drawbacks of GPS </li></ul>
  3. 3. INTRODUCTION <ul><li>GPS tracking means to trace something or someone with the Global Positioning System . </li></ul><ul><li>The GPS consists of a set of 24 operational satellites and land-based control stations. </li></ul><ul><li>The system was designed for and is operated by the U. S. military, owned by the US Department of Defense (DoD).  </li></ul><ul><li>Since 1994 the Global Positioning System has been available for civilian use at no cost. </li></ul><ul><li>By using GPS satellites, local land-based networks and wireless radio signals LT will find you, wherever you are. </li></ul>
  4. 4. NECESSITY OF TECHNOLOGY <ul><li>Department of Defense were facing challenges to increase security of the US. </li></ul><ul><li>During emergencies we require immediate tracking of important people. </li></ul><ul><li>Logistic companies need tracing of their fleet for reliable operations. </li></ul><ul><li>Personal valuables vehicles and goods when stolen or lost were not easier to locate. </li></ul>
  5. 5. Architecture and design Three major segments CONTROL USER SPACE GPS
  6. 6. SPACE SEGMENT
  7. 7. SPACE SEGMENT <ul><li>The space segment consists of 27 Earth-orbiting satellites (24 in operation and three extras in case one fails). </li></ul><ul><li>Each in its own orbit 20,200 kilometers above the Earth. </li></ul><ul><li>Orbit the earth in 12 hours. </li></ul><ul><li>There are six orbital planes with nominally four satellites in each, equally spaced (60 degrees apart). </li></ul><ul><li>This constellation provides the user with between five to eight satellites visible (with respect to communication) from any point on the earth. </li></ul>
  8. 8. CONTROL SEGMENT
  9. 9. CONTROL SEGMENT Master control Station Monitor station Monitor station Monitor station Monitor station HAWAII KWAJALEIN DIEGO GARCIA ASCENSION ISLAND COLORADO
  10. 10. CONTROL SEGMENT <ul><li>The Control Segment consists of a system of tracking stations located around the world. </li></ul><ul><li>One Master Control station and four monitor stations. </li></ul><ul><li>The Master Control unit, located at Schriever Air Force Base in Colorado,  is responsible for overall management of the remote monitoring and transmission sites. </li></ul><ul><li>The 4 Monitor Stations are unmanned  stations located around the world (Hawaii and Kawajalein in the Pacific Ocean; Diego Garcia in the Indian Ocean; Ascension Island in the Atlantic Ocean. They track up to 11 satellites twice a day. </li></ul>
  11. 11. USER SEGMENT
  12. 12. USER SEGMENT <ul><li>The user segment consists of GPS-receivers, located in cars, planes or even in GPS collars for wildlife. </li></ul><ul><li>They can be as small as a mobile phone. </li></ul>Biosensor Handheld
  13. 13. FUNCTIONALITY <ul><li>GPS receiver has to know two things: </li></ul><ul><li>The location of at least three satellites above you. </li></ul><ul><li>The distance between you and each of those satellites </li></ul><ul><li>A GPS receiver's job is to locate three or more GPS satellites, figure out the distance to each, and use this information to deduce its own location. </li></ul><ul><li>This operation is based on a simple mathematical principle called trilateration. </li></ul>
  14. 14. EXPLANATION (Trilateration) Satellite 1 100 km Satellite 1 detect the receiver with in the radius of 100 km
  15. 15. EXPLANATION (Trilateration) Satellite 1 100 km Satellite 2 detect the receiver with in the radius of 200 km 200 km Satellite 2
  16. 16. EXPLANATION (Trilateration) Satellite 1 100 km Satellite 3 detect the receiver with in the radius of 50 km 200 km Satellite 2 50 km Satellite 3
  17. 17. EXPLANATION (Trilateration) Satellite 1 100 km The intersection point of these three circles will be the exact location of Target 200 km Satellite 2 50 km Satellite 3
  18. 18. How Satellite Measures the Distance Satellite Rx on Earth EARTH Periodic simultaneous Transmission b/w Satellite and Rx on Earth station Time Delay * velocity of light = Distance
  19. 19. Measuring Distance Explanation <ul><li>The receiver and satellite both need clocks that can be synchronized down to the nanosecond. </li></ul><ul><li>For best synchronization Atomic clocks are required at both ends. </li></ul><ul><li>But atomic clocks cost somewhere between $50,000 and $100,000, which makes them a just a bit too expensive for everyday consumer use. </li></ul><ul><li>The Global Positioning System has a clever, effective solution to this problem. Every satellite contains an expensive atomic clock, but the receiver itself uses an ordinary quartz clock, which it constantly resets. </li></ul>
  20. 20. UTILITES & APPLICATION <ul><li>Vehicle Fleet Tracking </li></ul><ul><li>GPS Single Vehicle Tracking </li></ul><ul><li>GPS Data Logging </li></ul><ul><li>Real Time Tracking </li></ul>
  21. 21. UTILITES & APPLICATION
  22. 22. Vehicle Tracking
  23. 23. Real Time Vehicle Tracking
  24. 24. DRAWBACKS OF GPS <ul><li>System are very costly and required professional experience. </li></ul><ul><li>A stolen object can’t be traced out if Receiver is switched off or facing power failure. </li></ul><ul><li>Position of the receiver can’t be traced if kept under high EM insulation. </li></ul><ul><li>The drawbacks to GPS are that it requires a minimum of 4-5 satellites in order to give accurate locations. </li></ul><ul><li>The Hijacker is not guaranteed to catch. </li></ul>
  25. 25. Thank You

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