What is a geostationary orbit
The satellite remains above the same point above the equator and takes 24hrs to complete an orbit.
How do you calculate the total distance for a communication wave to travel from a satellite to earth?
Times the distance by 2
Equation for speed, distance and time
d
————
s x t
Advantage of placing communications satellites in geosynchronous orbit
-Communicate anywhere
Why is there less time delay in optical fibres than in satellites in geosynchronous orbit
When using the satellite, the signal must travel to one point and relay back.
Why don’t dishes for Tv signals from a communication satellite have to be moved
The satellite remains in the same place relative to the earth in a geostationary orbit
What are Optical Fibres
cables which carry signals as light (usually infrared as it travels further within cables than visible light).
- Carry more info
How fast do optical fibre signals travel
2x10^8 m/s
2 advantages of optical fibres over copper cables
- Use less energy
- They weigh less
What is a geosynchronous orbit
They have an orbital period of 24 hours and return to same position every 24 hours.
