A satellite earth‐station is affected by added radio noise from the Sun when the Sun passes behind the satellite as seen from the earth‐station. In the following, an exact analysis of this solar transit is derived, and an approximate method is presented for practical cases. Moreover, networks of very small aperture satellite terminals (VSATs) operating at Ku‐band microwave frequencies of 12–14 GHz behave differently during the solar transit period than the more traditional C‐ or Ku‐band satellite networks; therefore analytical and experimental results for VSATs have been presented. An explanation is given, based on these analyses, of why solar transit outages are rarer in VSATs than in conventional satellite communications systems.
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