Airborne measurements of incidental radio noise from cities
Article first published online: 7 DEC 2012
Copyright 1991 by the American Geophysical Union.
Volume 26, Issue 3, pages 773–781, May-June 1991
How to Cite
1991), Airborne measurements of incidental radio noise from cities, Radio Sci., 26(3), 773–781, doi:10.1029/91RS00451., , and (
- Issue published online: 7 DEC 2012
- Article first published online: 7 DEC 2012
- Manuscript Accepted: 12 FEB 1991
- Manuscript Received: 26 OCT 1990
In 1972 and again in 1989–1990 measurements of the incidental radio noise from two cities in central Illinois were made in the range 144–412 MHz by flying over in a light airplane equipped with downward looking antennas. The cities were well resolved by the antennas, so the data could be expressed as brightness temperatures. Care was taken to avoid contamination of the data by radiation from transmitters and the airplane's systems. Variation of brightness with frequency, time of day, and season of the year was determined. Comparison of the 1972 and 1989–1990 data shows no significant changes between epochs.