I remember taking a road trip with my daughter who was then four years old just after I got my transported Gps unit installed into my car. I said, “look baby, that dot shows exactly where we are.” To which she quickly replied, “Daddy, how does it know that?” Well, since she was only four years old, I had to illustrate it in a way that she could legitimately understand.
“Our position, as it relates to our exact location on the earth, is triangulated by the use of at least 24 Gps, or global positioning system, satellites that have been secured in space at locations so as to be able to cover the entire surface of the globe. These satellites are permanently sending signals to Earth that are then picked up by Gps receivers, such as the one installed on the car’s dashboard. Because this is a receiver, it only accepts the data that is transmitted to it by the Gps satellite. Once a transported Gps unit has received data from the satellite, the satellite then knows exactly where that unit is on the earth. Because this process is not exact and can only give position within 10 to 20 meters or so, it is important to use one of five ground-based satellites to help supplementary pinpoint the location of the Gps unit. By using data from satellites in space as well as on the ground, it’s inherent to uncover our position within an area as small as 1 meter.
GPS
Once the exact position of the Gps unit has been triangulated straight through the use of Gps satellites, this data is then overlaid on an electronically created map that exists as part of the unit itself. As long as the gadget remains in perceive with the satellites, we will be able to use this data to plan our driving route and get to our destination no matter where it is on the earth.”
After giving this explanation, which I thought was more than normal in nature, my minuscule baby girl looked at me again, cocked her head to the side, and said, “So, how does it know where we are?” “It’s magic…” I said, and this seemed to satisfy her just fine…Gps units Are like magic and I am more than happy I purchased one for the ability to magically appear at the location of my selection without getting lost for a change.
How portable Gps Units Work
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