Have you ever played a game of hide-and-seek? It's a lot of fun, but sometimes it can be hard to find the person hiding if you don't have any clues. Similarly, when we use GPS to find our way around, sometimes it can be hard for the GPS to find where we are exactly, especially when there are things like tall buildings or trees blocking the signal.
That's where GNSS augmentation comes in. It's like having a big brother or sister help you in a game of hide-and-seek by giving you clues about where the person hiding is. GNSS augmentation is a way of improving or augmenting the GPS system by providing additional information that helps us determine our position more accurately.
One way this is done is through the use of ground-based stations that monitor the signals that GPS satellites send. These stations can detect errors in the signals caused by things like atmospheric interference, and they can correct them. They then send this corrected information back to the GPS receiver, which can use it to determine your position with greater accuracy.
Another way of augmenting GPS is through the use of satellites that are specifically designed to provide additional signals that help improve the accuracy of GNSS. These signals can be used to calculate things like the distance to the GPS satellites more accurately than regular GPS signals, which reduces errors in positioning.
In summary, gnss augmentation is like having a big brother or sister help us find our way when we play hide-and-seek. By using additional information from ground stations or special satellites, it improves the accuracy of GPS, making it easier for us to figure out where we are.