The Riometer-A Device for the Continuous Measurement of Ionospheric Absorption
- 1 February 1959
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Proceedings of the IRE
- Vol. 47 (2) , 315-320
- https://doi.org/10.1109/jrproc.1959.287299
Abstract
A sensitive, self-balancing, noise-measuring equipment, known as the riometer, is described. This instrument has been designed for routine measurement of ionospheric absorption during the IGY, using the cosmic noise method. Application of this technique in the auroral zone has resulted in quantitative measurements of ionospheric absorption, even during polar blackouts. The riometer has the advantages over a simple total-power cosmic noise receiving system of 1) linear response to changes of input noise power, 2) high accuracy in the presence of narrow-band RF interference, and 3) good long-term stability.Keywords
This publication has 3 references indexed in Scilit:
- Some Measurements of High-Latitude Ionospheric Absorption Using Extraterrestrial Radio WavesProceedings of the IRE, 1958
- The measurement of ionospheric absorption using observations of 18·3 Mc/s cosmic radio noiseJournal of Atmospheric and Terrestrial Physics, 1953
- The design of an equipment for measuring small radio-frequency noise powersProceedings of the IEE - Part III: Radio and Communication Engineering, 1952