Have you ever seen a little dot in the sky, got so excited thinking it was star, and found out it was a satellite? It's so disappointing, I know. In reality, astronomers hate SpaceX satellites for the similar reasons. Look at this picture!
Have you ever seen a little dot in the sky, got so excited thinking it was star, and found out it was a satellite? It's so disappointing, I know. In reality, astronomers hate SpaceX satellites for the similar reasons. Look at this picture!
To get into satellite communications, there are two simple terms to learn! They are "uplink“⬆️ and "downlink"⬇️. "Uplink" is a link connected to send data/signal from ground stations on the ground to satellites up in the sky. So it's upward!
To get into satellite communications, there are two simple terms to learn! They are "uplink“⬆️ and "downlink"⬇️. "Uplink" is a link connected to send data/signal from ground stations on the ground to satellites up in the sky. So it's upward!
Today, let's talk about Ground Station📡 Satellites are floating above the sky, how do they communicate with Earth? There are facilities called "Ground Station"📡 They can communicate with satellites🛰️ and relay the signal to user end devices📱!
Today, let's talk about Ground Station📡 Satellites are floating above the sky, how do they communicate with Earth? There are facilities called "Ground Station"📡 They can communicate with satellites🛰️ and relay the signal to user end devices📱!
We use GPS a lot in our everyday life. Most of the popular map application such as maps, google maps, and etc are using GPS. GPS stands for Global Positioning System. But did you know all GPS are provided by MEO satellites? We are using satellites this close in our life!
We use GPS a lot in our everyday life. Most of the popular map application such as maps, google maps, and etc are using GPS. GPS stands for Global Positioning System. But did you know all GPS are provided by MEO satellites? We are using satellites this close in our life!
Unlike other satellites, GEO satellites float at the fixed position in the sky! If you look up, you can always find it at the same position! This is because the GEO satellites are rotating the Earth at the same speed of Earth rotation so it looks like it's fixed for us!
Unlike other satellites, GEO satellites float at the fixed position in the sky! If you look up, you can always find it at the same position! This is because the GEO satellites are rotating the Earth at the same speed of Earth rotation so it looks like it's fixed for us!
There are three major satellites categories. 🛰️🛰️🛰️
1. Low Earth Orbit satellites (LEO)
: less than about 2,000km from the Earth
2. Medium Earth Orbit satellites (MEO)
: about 2,000~36,000km from Earth
3. Geostationary satellites (GEO)
: about 35,786km from the Earth
There are three major satellites categories. 🛰️🛰️🛰️
1. Low Earth Orbit satellites (LEO)
: less than about 2,000km from the Earth
2. Medium Earth Orbit satellites (MEO)
: about 2,000~36,000km from Earth
3. Geostationary satellites (GEO)
: about 35,786km from the Earth
A. We only need 3 satellites to cover the entire Earth.
A. We only need 3 satellites to cover the entire Earth.
#satellites #science #engineer #geo #sciencefacts
#satellites #science #engineer #geo #sciencefacts