Differential GPS
Differential GPS (DGPS) is a way to help us find out exactly where we are on Earth. You know how we use maps to find out where we are going, but maps can sometimes be wrong or outdated? DGPS helps us avoid those issues by correcting any inaccuracies in our location.
To understand how it works, let's imagine you are playing hide and seek with your friends. Your friends are the GPS satellites up in the sky, and they are trying to find you by sending signals down to Earth. But sometimes buildings, trees, or other obstacles block the signals, and the GPS can't always get an exact location. DGPS helps fix this problem by using a ground station, located on the Earth's surface, to calculate the difference between the GPS signal and the actual position of the ground station itself.
Once the ground station knows the difference, it sends this correction information to your GPS device. Your GPS device then uses this corrected information to improve your location accuracy down to just a few feet – pretty neat, huh?
Overall, DGPS is a way to make sure we get the right information and can navigate through the world safely and effectively.
To understand how it works, let's imagine you are playing hide and seek with your friends. Your friends are the GPS satellites up in the sky, and they are trying to find you by sending signals down to Earth. But sometimes buildings, trees, or other obstacles block the signals, and the GPS can't always get an exact location. DGPS helps fix this problem by using a ground station, located on the Earth's surface, to calculate the difference between the GPS signal and the actual position of the ground station itself.
Once the ground station knows the difference, it sends this correction information to your GPS device. Your GPS device then uses this corrected information to improve your location accuracy down to just a few feet – pretty neat, huh?
Overall, DGPS is a way to make sure we get the right information and can navigate through the world safely and effectively.