ACS-2009-08 - Introduction A line-of-sight point-to-point...

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1 Introduction: A line-of-sight, point-to-point, microwave radio link provides transmission of information signals between telecommunication network nodes. To achieve correct operation, radio terminals must be positioned at appropriate height on towers. When both the transmitter and receiver are place on the surface of the earth, this is referred to as terrestrial communication systems.
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2 Introduction The maximum separation distance between terrestrial microwave radio terminals is limited by line-of-sight. Line-of-sight distance can be increased by increasing antenna height above ground level. Earth bulge limits the maximum antenna height In practice, microwave radio link distance is limited to slightly above 100 km. Satellite-based communication system overcome this limitations.
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3 Introduction - Cont. A communication satellite may be then considered as a “radio repeater” in the sky. Radio communication by satellite is an outcome of research for increasing radio communication range and capabilities.
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