What is Global Navigation Satellite System?

A Global Navigation Satellite System is like having a super-smart friend in the sky who can tell you exactly where you are.

Imagine you're playing hide-and-seek, and your friend can see everything from up high, they can count how many steps it takes to get from one place to another. That’s what satellites do in a Global Navigation Satellite System (or GNSS for short). They send out messages that help us find our way on Earth.

Think of the satellites as little helpers flying around Earth, each sending out signals like tiny radio waves. These signals travel down to your phone or watch, and by looking at how long it takes for them to arrive, your device can figure out where you are.

It’s like when you shout across a park to your friend, and they tell you how far away you are based on how long it took for your voice to reach them. The more helpers (satellites) you have, the better your phone can guess where you are, just like having more friends helps you find each other faster in hide-and-seek!