Noise of the Earth Atmosphere (10 GHz)

Joachim Köppen, Strasbourg, 2011/12

Objective: While the observation of a celestial source is affected by the noise background from the receiver as well as from the earth atmosphere, the measurement of the calibrator is only subjected to the receiver noise. Since the sky noise depends on elevation angle in a known way, but the receiver noise is constant, measurement of the noise of the 'empty' sky at several elevation angles allows to separate the two contributions, and a more correct value for the antenna temperature is obtained.


Follow the procedures to switch-on the ESA-Dresden telescope

Interpretation (more details):

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last update: Sept. 2011 J.Köppen