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How Do Gps Systems Work? Essay

840 words - 4 pages

Long ago without GPS we walked and drove the roads the best way we knew how. Getting lost, taking the wrong roads, hours of riding with no knowledge of our whereabouts. But, the GPS is a helpful invention that navigates us throughout the world. Do you know how GPS Systems work?
GPS stands for Global Positioning System. It was the first system available since the 1980’s. The system was invented by the U.S. department of defense. It was intended for military use only. http://www.pcmag.com Military added interference to the signals to ensure their own version was the only one with persistence. Even after 2000 it would be a while before they were in automobiles and cellular devices. The army, ...view middle of the document...

Onstar is one of the leading providers. They are used for a wide variety of applications in our cars. There are certain buttons you can press for different reasons. Onstar has satellite radio. It also gives your automobile its own phone number. If you’re lost it’ll also give you directions. If your automobile is stolen GPS receiver can be used to locate your car and notify the police. It also locks and unlocks your car. On some systems GPS can diagnose some car problems like the check engine light and strange noises. It also allows you to flash the lights or sound the horn if you forget where you parked. Large companies like UPS and FedEx use it locate homes and businesses. http://www.academic.emporia.edu FBI recently denied a tactic of illegal wiretap through car navigation to listen in on passengers. However, with cell phones the E911 system, a 911 caller can be tracked through GPS technologies. In this way, a caller who doesn’t know where they are can be tracked. If you were lost it could direct you back to somewhere you know of.

The accuracy of the GPS signal in space is the same for both the civilian GPS and the military GPS. Wrong directions, missing addresses and other errors are not GPS system. Sometimes, the problem could be atmospheric effects. The complication could also be inaccurate map data. The map data does not come from the GPS government satellite but the private sector. A private...

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