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Ppt local tracking and gps

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    Ppt local tracking and gps Ppt local tracking and gps Presentation Transcript

    • LOCATION TRACKING (LT) & GLOBAL POSITIONING SYSTEMS (GPS)
    • AGENDA
      • Introduction to LT & GPS
      • Necessity of technology
      • Architecture and design
      • Functionality
      • Utilities and Applications
      • Drawbacks of GPS
    • INTRODUCTION
      • GPS tracking means to trace something or someone with the Global Positioning System .
      • The GPS consists of a set of 24 operational satellites and land-based control stations.
      • The system was designed for and is operated by the U. S. military, owned by the US Department of Defense (DoD). 
      • Since 1994 the Global Positioning System has been available for civilian use at no cost.
      • By using GPS satellites, local land-based networks and wireless radio signals LT will find you, wherever you are.
    • NECESSITY OF TECHNOLOGY
      • Department of Defense were facing challenges to increase security of the US.
      • During emergencies we require immediate tracking of important people.
      • Logistic companies need tracing of their fleet for reliable operations.
      • Personal valuables vehicles and goods when stolen or lost were not easier to locate.
    • Architecture and design Three major segments CONTROL USER SPACE GPS
    • SPACE SEGMENT
    • SPACE SEGMENT
      • The space segment consists of 27 Earth-orbiting satellites (24 in operation and three extras in case one fails).
      • Each in its own orbit 20,200 kilometers above the Earth.
      • Orbit the earth in 12 hours.
      • There are six orbital planes with nominally four satellites in each, equally spaced (60 degrees apart).
      • This constellation provides the user with between five to eight satellites visible (with respect to communication) from any point on the earth.
    • CONTROL SEGMENT
    • CONTROL SEGMENT Master control Station Monitor station Monitor station Monitor station Monitor station HAWAII KWAJALEIN DIEGO GARCIA ASCENSION ISLAND COLORADO
    • CONTROL SEGMENT
      • The Control Segment consists of a system of tracking stations located around the world.
      • One Master Control station and four monitor stations.
      • The Master Control unit, located at Schriever Air Force Base in Colorado,  is responsible for overall management of the remote monitoring and transmission sites.
      • 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.
    • USER SEGMENT
    • USER SEGMENT
      • The user segment consists of GPS-receivers, located in cars, planes or even in GPS collars for wildlife.
      • They can be as small as a mobile phone.
      Biosensor Handheld
    • FUNCTIONALITY
      • GPS receiver has to know two things:
      • The location of at least three satellites above you.
      • The distance between you and each of those satellites
      • 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.
      • This operation is based on a simple mathematical principle called trilateration.
    • EXPLANATION (Trilateration) Satellite 1 100 km Satellite 1 detect the receiver with in the radius of 100 km
    • EXPLANATION (Trilateration) Satellite 1 100 km Satellite 2 detect the receiver with in the radius of 200 km 200 km Satellite 2
    • 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
    • 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
    • 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
    • Measuring Distance Explanation
      • The receiver and satellite both need clocks that can be synchronized down to the nanosecond.
      • For best synchronization Atomic clocks are required at both ends.
      • But atomic clocks cost somewhere between $50,000 and $100,000, which makes them a just a bit too expensive for everyday consumer use.
      • 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.
    • UTILITES & APPLICATION
      • Vehicle Fleet Tracking
      • GPS Single Vehicle Tracking
      • GPS Data Logging
      • Real Time Tracking
    • UTILITES & APPLICATION
    • Vehicle Tracking
    • Real Time Vehicle Tracking
    • DRAWBACKS OF GPS
      • System are very costly and required professional experience.
      • A stolen object can’t be traced out if Receiver is switched off or facing power failure.
      • Position of the receiver can’t be traced if kept under high EM insulation.
      • The drawbacks to GPS are that it requires a minimum of 4-5 satellites in order to give accurate locations.
      • The Hijacker is not guaranteed to catch.
    • Thank You