Global Positioning System

Overview

 The NAVSTAR Global Positioning System (GPS) is a satellite-based radio-positioning and time transfer

 Department of Defense. GPS has also demonstrated a significant benefit to the civilian community who are applying GPS to a

rapidly expanding number of applications.

What attracts us to GPS is:

• The relatively high positioning accuracies, from tens of metres down to the millimetre level.

• The capability of determining velocity and time, to an accuracy commensurate with position.

• The signals are available to users anywhere on the globe: in the air, on the ground, or at sea.

• Its is a positioning system with no user charges, that simply requires the use of relatively low

   cost hardware.

• It is an all-weather system, available 24 hours a day.

• The position information is in three dimensions, that is, vertical as well as horizontal information

   is provided.

The number of civilian users is already significantly greater than that of the military users. Nevertheless, despite the handicap of GPS being a military system there continues to be tremendous product innovation within the civilian sector, and it is ironic that this innovative drive is partly directed to developing technology and procedures to overcome some of the constraints to GPS performance which have been applied by the system's military operators.

OVERVIEW:

GPS is used in vehicles for both tracking and navigation. Tracking systems enable a base station to keep track of the vehicles without the intervention of the driver where, as navigation system helps the driver to reach the destination. Whether navigation system or tracking system, the architecture is more or less similar. The navigation system will have convenient, usually a graphic, display for the driver which is not needed for a tracking system. Vehicle Tracking Systems combine a number of well-developed technologies. Irrespective of the technology being used, VTS consist of three subsystems: a) In-vehicle unit (IVU), b) Base station and c) Communication link. The IVU includes a suitable position sensor and an intelligent controller together with an appropriate interface to the communication link. Thanks to the US Government announcement of 911E regulation, radio based position technology has witnessed a spurt of developmental activities. 

           GPS regular basically contain the audio function in it. This GPS regular is more beneficial as compare to others in vehicle tracking system.

OVERVIEW:

GPS is used in vehicles for both tracking and navigation. Tracking systems enable a base station to keep track of the vehicles without the intervention of the driver where, as navigation system helps the driver to reach the destination. Whether navigation system or tracking system, the architecture is more or less similar. The navigation system will have convenient, usually a graphic, display for the driver which is not needed for a tracking system. Vehicle Tracking Systems combine a number of well-developed technologies. Irrespective of the technology being used, VTS consist of three subsystems: a) In-vehicle unit (IVU), b) Base station and c) Communication link. The IVU includes a suitable position sensor and an intelligent controller together with an appropriate interface to the communication link. Thanks to the US Government announcement of 911E regulation, radio based position technology has witnessed a spurt of developmental activities. 

           GPS premium basically contain two way communication functions. This GPS premium is used as receiver and transmitter.