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Sun Outage

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Sun Outage (or Solar Outage) is a severe interference event generally resulting in the loss of satellite communications service caused by the physical geographical alignment of the sun, satellite and earth-station coming into a direct line.


Look the picture above, let's assume that virtual orbit of Sun with position from A to N.
When an Earth station and Satellite Communication is In-Line with the Sun position, then the Earth station receive heavy and very strong NOISE for Rx-path. This Sun Outage happens because Sun is the largest Noise Source with 'complete' Spectrum.
Sun Outage will be experienced by Satellite communication twice on every year, which are in March and September for a few days, duration of approximately 10 to 20 minutes a day, starting from the most West Earth-Station.
From the picture, Station A located in West of Station B, will have earlier Sun Outage (usually before noon) compared to Station B.

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