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S7200 TV Signal Analyzer Operation Manual
The following content will provide some create satellite channel plan related basic
knowledge.
Broadcast satellite is the geostationary orbit satellite. Each satellite in
geosynchronous orbit over the equator on a fixed position point, its purpose is to
make every broadcast satellite to be able to cover the designated service area.
Each country lanuch broadcast satellites' latitude is 0°, the longitude use the point
of the intersection of the earth's center and satellite connection with equatorial
position (sub-satellite point) as longitude, the longitude range is 0° ~ 360°.
Located at east longitude abbreviated as °E, located west abbreviated as °W.
The sub-satellite concept: In order to determine the look angles of a satellite, its
precise location should be know. The location of a satellite is very often
determined by the position of the sub-satellite point. The sub-satellite point is the
location on the surface of the Earth that lies directly between the satellite and the
center of the Earth. To an observer on the sub-satellite point, the satellite will
appear to be directly overhead, as the Figure 5-61show.
Figure 5-60 How to Describe the Satellite Position
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