The Global Positioning System or GPS as it is commonly referred to, is a navigational aid which involves a network of 24 satellites positioned in orbit by the Defense Department of USA. It was intended initially for military purposes but was opened for civilian use in the 80’s by the US government. This is a round the clock service which can be used free of charge by anyone and anywhere in the world.
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How Does GPS Work?
The GPS works through the network of its satellites which move in their orbit and broadcast signal information as they circle the earth two times in a day. The GPS receiver needs to receive signals of minimum three satellites to decipher the user’s position in terms of latitude and longitude. Signals from four and above satellites can enable the GPS receiver to indicate the altitude location too. After determining the location, other aspects such as speed, trip distance etc can be known.
Vehicle Tracking Systems::In India, the GPS performs a very important function of managing the vehicular flow in many cities like Delhi and the neighboring areas such as Noida and Gurgaon. The hardware device which uses GPS know-how to keep an eye on vehicle movements is known as Automatic Vehicle Locater System. This comprises of the fixed base station units and the mobile unit.
The Vehicle Tracking Systems help to trace any car, bus, truck, bike on which this system is being installed through a widespread method of triangulation. The method helps to determine the location as well as speed and direction movement of the device. Monitoring fleet of vehicles and judging the drivers becomes much easier.
GPS Tracking System has brought about an explosion in the field of communication technology and with costs of installation being greatly reduced it has become accessible to all.
How useful are GPS satellites in India?
GPS know-how has been used in India since the beginning of the 90’s. In India it is mainly used for:
- Tracking vehicular traffic
- Meteorological calculations
- Deciphering national boundaries
- Improving farming techniques & much more
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