Quote:
Alan_SP kaže:
Jos prate Voyagera. On izisao iz sunceva sustava.
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O da, ... recimo ovako
Ground Control
While the Voyagers themselves did all the data gathering, there were important mission elements on the ground as well. The Voyagers’ signals became increasingly difficult to detect as they flew out into the outer solar system,
so NASA improved a worldwide network of radio receiving stations to better detect them.
A series of 230-foot (70-meter) radio dishes pull in the Voyager data and send signals out to it, maintaining almost continuous communication [source: Evans].
http://science.howstuffworks.com/voyager2.htm
I nemoj zaboraviti da osim problema sa propagacijom kontinuiranih valova koje Ti je mukotrpak lijepo napisao imaš i problem sa pojačanjem antena jer parabolične antene imaju pojačanja nekoliko tisuća puta više od štap antene. A tu je i korištenje diferencijalnog prijema sa uzorkovanjem ....