DocumentCode
1178972
Title
The Doppler Twin Beacon
Author
Kramar, E.
Author_Institution
Standard Elektrik Lorenz AG, Stuttgart, Germany
Issue
1
fYear
1964
fDate
3/1/1964 12:00:00 AM
Firstpage
2
Lastpage
8
Abstract
This radio aid to navigation differs from conventional radio beacons in the use of two spaced antenna arrays giving two separate directional radiation patterns. Preconditions and feasible solutions for the spatial separation of the arrays are shown. The use of the Doppler principle with its swing vs direction patterns permits transmission of the azimuth information independently of the carrier amplitude. This mode of operation precludes the disadvantages due to inhomogeneities in the two propagation paths established in the previously proposed split-antenna systems.
Keywords
Aircraft; Amplitude modulation; Antenna radiation patterns; Antennas and propagation; Frequency modulation; Instruments; Lighting; Radio control; Radio navigation; Research and development;
fLanguage
English
Journal_Title
Aerospace and Navigational Electronics, IEEE Transactions on
Publisher
ieee
ISSN
0096-1957
Type
jour
DOI
10.1109/TANE.1964.4502148
Filename
4502148
Link To Document