GPS: Never EVER Lost!

By   a 4th grade student and Mr. Welch

Intro

Have you ever been lost?  Imagine you are hiking or sailing and you suddenly realize, you don’t know where in the world you are!  Your heart begins to pound.  Your forehead begins to sweat.  Then you smile and pull out your handy GPS.  My report will cover three interesting ideas.  First, I will write about what GPS is and what GPS does.  Next, I will cover the invention of the GPS.  Finally, I will end with The GPS satellites.  So, keep reading and let’s begin this journey about GPS.

What GPS is and what GPS does


This paragraph is about what GPS is and what GPS does. GPS can track you anywhere on earth.  It uses a fancy math called trilateration. Marshall Brain said that A GPS receiver could   help you find where you are, anywhere on earth as long as you have a clear enough view of the sky. If your GPS receiver can get signals from 3 or more satellites, it can figure out where you are by doing some fancy math called trilateration.

The Invention of the GPS


This paragraph is about the invention of the GPS.  It was invented by the military so people wouldn’t get lost.  In fact, it was invented in 1973.  Allison K. Brown said that in the early 1970's, the military began developing GPS. It became fully operational in 1995. (World Book Encyclopedia)

The GPS Satellites

This paragraph is about the GPS Satellites.   The GPS satellites go 12,000 mph twice a day.  There are 27 satellites orbiting the Earth. But we only use 24, 3 are extra just in case we need them.  The 27 satellites each weigh 3,000 to 4,000 pounds.  The satellite uses solar power AKA sun power.  The   difference between the receiver and the satellite is that a satellite is up in space and a receiver you buy at the store.  A receiver is about 70-100 dollars.  A satellite is millions and millions of dollars.  A receiver is like a radio because it tracks   down signals but it doesn’t make noises like a radio.

Digital Graphic Research Corporation taught that,

“A GPS can get lost if it can't hear the tunes. Radio waves travel in straight lines, and they don't pass through metal or rock easily. So in a tunnel, or downtown surrounded by tall buildings, or even under heavy tree cover, a GPS can lose its position.”

(www.dgrc.com)

Conclusion

                                                          So if you are an adventurous person, don’t worry, you won’t get lost, because GPS is there to save you!  It’s only going to save you if you have a GPS, and if you   don’t have a GPS, you should   get a GPS NOW and if you don’t get one now you might be lost forever and ever.  I hope you enjoyed learning about GPS, and that was my fabulous GPS report.