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Unread 26-02-2007, 22:55
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Re: GPS receiver

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Originally Posted by haroony341 View Post
i find this GPS stuff really interesting. but im confused. what exactly does the chip do? what does it connect to? dont you need a satellite or something as a reference point? and how would you read the data? sorry for the questions, im just confused on a lot of its workings.
The devices mentioned here are GPS receivers and decoders. They listen to signals from the orbiting GPS satellites and measure time delays to figure out how far from each satellite they are. With enough satellite signals being received, that lets them compute exactly where they are in latitude, longitude, and altitude.

The NMEA 0183 protocol is a serial data stream, containing lots of information, including position and time.

If you want to know more about how it all works, let Google be your guide.
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