antenna-theory.com

[Juho]

In antenna Temperature section of antenna-theory.com, i have questions about the temperature distribution.
How can we know the temperature distribution?
for pencil beam, this beam pass many diffrent temperature at one direction.
troposphere, stratosphere, mesosphere, thermosphere, and the cosmos each has diffrent temperature.
how can we define this temperature???

[helix]

Antenna noise temperature is not necessarily correlated directly to a physical temperature but it's merely a way to express the noise power received by an antenna...

Probably what you want to know can't be satisfactorily addressed in an online forum. A book on radio astronomy might be a better resource.