Gps(global positioning system)

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  • 01/08/12
  • Gps(global positioning system)

    1. 1. Kritagya Raj Upadhyay BIM ‘A’ 1 st Sem 118 GPS(Global Positioning System) Technology Computer Information System
    2. 2. CONTENTS <ul><li>Introduction of GPS </li></ul><ul><li>History </li></ul><ul><li>How does GPS works? </li></ul><ul><li>Usefulness of GPS </li></ul>01/08/12 GPS
    3. 3. INTRODUCTION OF ‘GPS’ 01/08/12 GPS
    4. 4. <ul><li>Space-based. </li></ul><ul><li>Global navigation satellite system. </li></ul><ul><li>Constellation of 24 satellites </li></ul><ul><li>and their ground stations. </li></ul><ul><li>Provides location and time </li></ul><ul><li>information. </li></ul><ul><li>Maintained by U.S Govt. </li></ul><ul><li>Freely accessible. </li></ul>01/08/12 GPS
    5. 5. <ul><li> HISTORY </li></ul>01/08/12 GPS
    6. 6. <ul><li>Developed in 1973. </li></ul><ul><li>U.S (DoD) for military had to have a precise form of worldwide positioning. </li></ul><ul><li>Became fully operated </li></ul><ul><li>in 1994. </li></ul>01/08/12 GPS
    7. 7. <ul><li>HOW DOES GPS WORKS ? </li></ul>01/08/12 GPS
    8. 8. <ul><li>GPS works in six logical steps: </li></ul><ul><li>The basis of GPS is ‘triangulation’ from satellites. </li></ul><ul><li>To ‘triangulate’, a GPS receiver measures distance using the travel time of radio signals. </li></ul><ul><li>To measure travel time, GPS needs very accurate timing. </li></ul><ul><li>Along with distance, GPS needs to know exactly where the satellites are in space. </li></ul><ul><li>GPS must correct for any delays the signal experiences as it travels through the atmosphere. </li></ul><ul><li>Finally (for us), we can now obtain the precise time and location from the GPS satellites. </li></ul>01/08/12 GPS
    9. 9. USEFULNESS OF GPS 01/08/12 GPS
    10. 10. <ul><li>Provides critical capabilities to military, civil and commercial users around the world. </li></ul><ul><li>Maintains future warfighter advantage over opponents. </li></ul><ul><li>Being used now in cell phones as a popular application to implement the emergency (‘911’) location system. </li></ul><ul><li>Calculates the speed and compass heading of the person or craft carrying it. </li></ul><ul><li>Modernizing the global </li></ul><ul><li>air traffic system. </li></ul><ul><li>Used on boats, ships, airplanes, </li></ul><ul><li>cars, and ambulances as well as </li></ul><ul><li>by hikers, explorers and </li></ul><ul><li>mountain climbers. </li></ul>01/08/12 GPS
    11. 11. LAUNCHING A GPS SATELLITE 01/08/12 GPS
    12. 12. <ul><li>Thank – You </li></ul><ul><li>Any questions ??? </li></ul>01/08/12 GPS

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