DocumentCode
1137600
Title
Aperture Synthesis for Ionospherically Propagated HF Radio Signals
Author
Lynch, John T.
Author_Institution
M.I.T. Lincoln Laboratory Lexington, Mass. 02173
Issue
4
fYear
1972
fDate
7/1/1972 12:00:00 AM
Firstpage
466
Lastpage
471
Abstract
A high-frequency (HF) aperture was synthesized by receiving ionospherically propagated signals in an airplane. The signals used the one-hop F lower ray mode to propagate a distance of 2600 km and were processed to yield equivalent aperture lengths of 10 km and 70 km. It was shown that apertures of up to 10 km in length could sometimes achieve their ideal free-space directivity without use of ionospheric compensation.
Keywords
Airplanes; Antennas and propagation; Apertures; Earth; Electrons; Hafnium; Ionosphere; Laboratories; Phased arrays; Signal synthesis;
fLanguage
English
Journal_Title
Aerospace and Electronic Systems, IEEE Transactions on
Publisher
ieee
ISSN
0018-9251
Type
jour
DOI
10.1109/TAES.1972.309543
Filename
4102984
Link To Document