NDLI: Wide-Base Doppler Very-High-Frequency Direction Finder

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Wide-Base Doppler Very-High-Frequency Direction Finder

Content Provider	IEEE Xplore Digital Library
Author	Steiner, F.
Copyright Year	1955
Abstract	Although it is quite well known that bearing errors occurring with multipath propagation can be reduced by using widebase antenna arrays, only systems operating with phase or frequency modulation have come into practical use. A method of progressively scanning a circular antenna array is described. This scanning which produces a frequency modulation in which the frequency deviation is a function of the bearing information, is accomplished by a rotating capacitive switch, and no vacuum tubes or crystal diodes are employed. Moreover, a special light indicator replaces the usual cathode-ray tube. Designed primarily for the very-and ultra-high frequencies, the equipment is quite simple and of high reliability.
Starting Page	98
Ending Page	105
Page Count	8
File Size	3951127
File Format	PDF
ISSN	00961639
Volume Number	ANE-7
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1960-09-01
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Displays Antenna arrays Directive antennas Aircraft Antennas and propagation Phased arrays Frequency modulation Switches Phase measurement Navigation
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Aerospace Engineering

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