GLOBAL POSITIONING SYSTEM

[B]GLOBAL POSITIONING SYSTEM[/B]

[B]INTRODUCTION:[/B]

Imagine being an archaeologist on an expedition to the Yucatan Peninsula in Mexico. After preparing for your trip for months, you are certain that somewhere close by are the ruins of villages once populated by Mayan Indians. The forest is dense, the sun is hot, and the air is humid. The only way you can record where you have been, or find your way back to civilization, is by using the almost magic power of your GPS receiver.

Or let's suppose you are an oceanographer for the International Ice Patrol. You may be responsible for finding icebergs that form in the cold waters of the North Atlantic Ocean. Some of these icebergs are 50 miles long. They are a major threat to the ships that travel those waters, and more than 300 of them form every winter. Using a GPS receiver, you are able to help ships avoid disaster by zeroing in on the position of the icebergs and notifying ship captains of their locations, perhaps averting disaster.

There will probably be a time soon when every car on the road can be equipped with a GPS receiver, including a video screen installed in the dashboard. The in-dash monitor will be a full-color display showing your location and a map of the roads around you. It will probably monitor your car's performance and your car phone as well. Systems as amazing as this one are already being tested on highways in the United States.

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