Satellite Communication-P5
- Created by: Shannon
- Created on: 08-04-13 10:27
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- Satellite Communication
- Longitudinal- sound wave
- Transverse- light wave
- Dish is bigger than the wavelength of microwaves
- Little difraction
- Diffraction through a gap
- Wavelength=gap
- Maximum diffraction
- Little diffraction in microwave transmission
- Wavelength=gap
- Low orbit- low frequencies
- Geostationary-high frequencies
- Parabolic transmission
- Digital information
- Transmission to satellite
- Amplified and re transmitted- multiplexing, no interference
- Transmission to satellite
- Digital information
- Parabolic transmission
- Geostationary-high frequencies
- Ionosphere
- Charged particles in the atmosphere.Waves can reflect and refract from here
- Radio waves-TIR
- Less than 30MHz-reflected
- More than 30GHz-absorbed and scattered
- Longitudinal- sound wave
- Digital information
- Transmission to satellite
- Amplified and re transmitted- multiplexing, no interference
- Transmission to satellite
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