The
footprint of a
communications satellite is the ground area that its
transponders offer
coverage, and determines the
satellite dish diameter required to receive each
transponder's signal. There is usually a different map for each
transponder (or group of
transponders) as each may be aimed to cover different areas of the ground.
Footprint maps usually show either the estimated minimal satellite dish diameter required or the signal strength in each area measured in dBW.
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