P5 - Satellite communication Flashcards
1
Q
What is the process of sending a microwave signal?
A
Microwave signals are:
- sent into space from a transmitter
- received and amplified by a geostationary satellite
- re transmitted back to Earth or another receiver
- picked up by a receiver
2
Q
What is diffraction?
A
Diffraction is the spreading out of waves when they pass through gap or around a large object.
3
Q
Why do waves used for TV signals need a line of sight?
A
The do not diffract very much.
4
Q
What does the amount of diffraction depend on?
A
- size of gap
- wavelength
