IEVref:705-07-80ID:
Language:enStatus: Standard
Term: riometer
Synonym1: relative ionospheric opacity meter
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Definition: a calibrated radio receiver tuned to a fixed frequency between 10 and 100 MHz, used to record the flux of cosmic noise; this flux can be used to determine time variations of ionospheric absorption

NOTE – The term "riometer" is a contraction of "Relative Ionospheric Opacity Meter".


Publication date:1995-09
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