Global positioning system report and ppt

[seminar class]

Presented by:
Nipun Tripathi

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Global Positioning System
User Segment
 Military.
 Search and rescue.
 Disaster relief.
 Surveying.
 Marine, aeronautical and terrestrial navigation.
 Remote controlled vehicle and robot guidance.
 Satellite positioning and tracking.
 Shipping.
 Geographic Information Systems (GIS).
 Recreation
Four Primary Functions of GPS
 Position and coordinates.
 The distance and direction between any two waypoints, or a position and a waypoint.
 Travel progress reports.
 Accurate time measurement.
Position Fix
 A position is based on real-time satellite tracking.
 It’s defined by a set of coordinates.
 It has no name.
 A position represents only an approximation of the receiver’s true location.
 A position is not static. It changes constantly as the GPS receiver moves (or wanders due to random errors).
 A receiver must be in 2D or 3D mode (at least 3 or 4 satellites acquired) in order to provide a position fix.
 3D mode dramatically improves position accuracy.
Waypoint
 A waypoint is based on coordinates entered into a GPS receiver’s memory.
 It can be either a saved position fix, or user entered coordinates.
 It can be created for any remote point on earth.
 It must have a receiver designated code or number, or a user supplied name.
 Once entered and saved, a waypoint remains unchanged in the receiver’s memory until edited or deleted.