GPS triangulation is like using three friends to find out where you are on a playground.
Imagine you're playing hide-and-seek on a big playground. You're hiding somewhere, and your friends (who can see the whole playground) shout out how far away they think you are from them. Each friend gives you one number, that’s like a distance.
Now, if just one friend tells you how far away you are, you could be anywhere on a circle around them. But if two friends tell you your distance from each of them, the place where those circles overlap is a point, and that's probably where you are! It’s like drawing two circles on paper, where they cross, that's your spot.
But to be really sure, a third friend helps out. Now you have three distances, and only one spot where all three circles meet. That’s how GPS works: it uses three satellites in the sky to figure out exactly where you are on Earth.
It’s like having three friends who can see your whole playground, and they tell you just the right numbers so you know precisely where to pop out!
Examples
- A farmer uses a simple GPS device to locate his tractor on a large field.
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See also
- How does GPS accurately determine your exact location on Earth?
- How does a GPS device know where I am?
- What is 24 satellites?
- What are gps satellites?
- How do GPS satellites pinpoint your exact location on Earth?