DocumentCode
1137749
Title
MF sky-wave propagation: a comparison of measurements made at sunset and sunrise
Author
Knight, P. ; Williams, W.F.
Author_Institution
British Broadcasting Corp., Tadworth, UK
Volume
35
Issue
2
fYear
1989
fDate
6/1/1989 12:00:00 AM
Firstpage
200
Lastpage
203
Abstract
The strength of MF skywave signals is greatest at night and weakest during the day. The increase in field strength which occurs at sunset has been extensively studied but less is known about the decrease which occurs at sunrise. A description is given of a series of measurements made by members of the European Broadcasting Union (EBU), which cover both the sunrise and sunset periods. The results show that during the sunset period the measurements agree closely with the existing CCIR curve but that the sunrise measurements indicate that the existing CCIR curve is inaccurate. A modified curve for MF use is proposed
Keywords
ionospheric electromagnetic wave propagation; radiowave propagation; CCIR curve; MF sky-wave propagation; field strength; ionosphere; radiowave propagation; sunrise; sunset; Accuracy; Acoustic propagation; Broadcasting; Equations; Europe; Frequency measurement; TV; Transmitters;
fLanguage
English
Journal_Title
Broadcasting, IEEE Transactions on
Publisher
ieee
ISSN
0018-9316
Type
jour
DOI
10.1109/11.30835
Filename
30835
Link To Document