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Chapter 11:
Orbital Slots, Frequencies, Footprints, and Coverage
Abstract
Since all GSO satellites are in an orbit lying over the earth’s equator, the way to refer to such a satellite’s orbital position is by the longitude over which it remains stationary. The location on Earth’s surface directly below any satellite is called the subsatellite point. For GSO satellites, these are always on the equator. The position in orbit, denoted by its longitude, is called the satellite slot. See Fig. 11.1.
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CHAPTER 11
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