A UHF cross-modulation D region heating experiment with aeronomic implications
Article first published online: 7 DEC 2012
Copyright 1982 by the American Geophysical Union.
Volume 17, Issue 2, pages 435–443, March-April 1982
How to Cite
1982), A UHF cross-modulation D region heating experiment with aeronomic implications, Radio Sci., 17(2), 435–443, doi:10.1029/RS017i002p00435., , and (
- Issue published online: 7 DEC 2012
- Article first published online: 7 DEC 2012
- Manuscript Accepted: 26 AUG 1981
- Manuscript Received: 14 APR 1981
A unique wave interaction experiment employing the Arecibo 2.0-MW, 430-MHz radar as disturbing or heating transmitter has been performed. The purpose of this experiment was to evaluate UHF electron heating effects and to extend the wave interaction technique to higher than usual heights (˜100 km). The heater beam used was much smaller in angular extent than the probing or wanted beam, yielding an unfavorable geometric weighting factor and making the experiment very sensitive to reflection properties of the E region. Nonetheless, wave interaction was easily detected using a completely digital signal processing technique. Comparison of experimental wave interaction results with a numerical model of the process indicates that lower thermosphere electron cooling rates are possibly too small by a factor of 4. Power spectra of the 3.155 MHz wanted signal (reflected from E region) amplitude fluctuations for ‘quiet’ and ‘disturbed’ days are also given.