Antenna and stabilization console for a VLF relative navigational system

Download
Author
Roeder, Bernard Franklin, Jr.
Date
1969-04Advisor
Menneken, Carl E.
Metadata
Show full item recordAbstract
A VLF relative navigational system makes use of the fact that, at any given point on the earth, phase delay of a received VLF signal is highly stable and predictable. As the receiver is physically moved, phase delay changes linearly with distance from the transmitting station, so that by keeping track of the phase delay of the received signal from several VLF stations, an accurate plot of geographical position is maintained. The paper outlines the development of a relatively simple antenna system, composed of two crossed loops and a whip sense antenna to produce a cardiod shaped radiation pattern, which effectively discriminates against the long-way-around-the world contamination on the short path signal. A means is also devised for electronically rotating the fixed antenna by means of a goniometer which may be stabilized in azimuth by an input from a ship's gyrocompass
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
Related items
Showing items related by title, author, creator and subject.
-
Topaz II Nuclear Powered SAR Satellite
Feuerstein, M.; Agrawal, B.N. (1994);The AA4871 Spacecraft Design course is the capstone class for the M.S. in Astronautics at the Naval Postgraduate School. Thc design team integrated a Topaz If nuclear power system with an EOS Synthetic Aperture Radar to ... -
Integrated masts for ship radiofrequency electromagnetic interference mitigation – a preliminary electromagnetic characterization study (u)
Dall’Armi-Stoks, Giuseppina (Monterey, California. Naval Postgraduate School, 2011-12); NPS-EC-12-002This report provides an electromagnetic characterization analysis in order to ascertain if integrated masts are an effective ship radiofrequency electromagnetic interference mitigation strategy. Free space and fitted antenna ... -
Ultra-wideband conformal helmet antenna
Lebaric, J.; Ah-Tuan Tan (2000);This paper presents the development of an ultra-wideband (300 to 3000 MHz), vertically polarized, nearly omni-directional (in azimuth) communications antenna integrated into the camouflage cover of a standard military-issue ...