A Method Of Automatic Radio Direction Finding At Very High Frequencies
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A Method Of Automatic Radio Direction Finding At Very High Frequencies
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Author : Jack Milton Shulman
language : en
Publisher:
Release Date : 1947
A Method Of Automatic Radio Direction Finding At Very High Frequencies written by Jack Milton Shulman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1947 with Radio direction finders categories.
Radio Direction Finding
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Author : David William Watson
language : en
Publisher:
Release Date : 1971
Radio Direction Finding written by David William Watson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Technology & Engineering categories.
A New Automatic Direct Reading High Frequency Radio Direction Finder
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Author : William John Ross
language : en
Publisher:
Release Date : 1955
A New Automatic Direct Reading High Frequency Radio Direction Finder written by William John Ross and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1955 with Radio direction finders categories.
Radio Direction Finding
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Author : United States. Department of the Army
language : en
Publisher:
Release Date : 1977
Radio Direction Finding written by United States. Department of the Army and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Navigation (Aeronautics) categories.
A Unicontrol High Frequency Radio Direction Finder
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Author : Francis Winkley Dunmore
language : en
Publisher:
Release Date : 1926
A Unicontrol High Frequency Radio Direction Finder written by Francis Winkley Dunmore and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1926 with Radio categories.
Radio Direction Finding On High Frequency Short Duration Signals
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Author : Dennis Dean Sheppard
language : en
Publisher:
Release Date : 1980
Radio Direction Finding On High Frequency Short Duration Signals written by Dennis Dean Sheppard and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with categories.
The feasibility of accomplishing high frequency direction finding against short duration (100-1000 ms) HF skywave signals using narrow aperture antennas is investigated. Two statistical procedures for estimating the signal bearing are proposed and compared. These procedures employ time averaging to reduce the large instantaneous bearing error caused by the phase and amplitude distortion of the wavefront due to scattering and multipath interference. Results are presented using data collected with the Southwest Research Institute Coaxial Spaced Loop HFDF system. It is shown that for a limited sample of data from this system the standard deviation of the bearing estimate for a 200 ms signal varied from 15 to 59 degrees. (Author).
Radio Direction Finders
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Author : Donald S Bond
language : en
Publisher:
Release Date : 1944
Radio Direction Finders written by Donald S Bond and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1944 with Radio direction finders categories.
Small Aperture Radio Direction Finding
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Author : Herndon H. Jenkins
language : en
Publisher: Artech House Radar Library (Ha
Release Date : 1991
Small Aperture Radio Direction Finding written by Herndon H. Jenkins and has been published by Artech House Radar Library (Ha this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Technology & Engineering categories.
Operating principles - Performance difinition - Direction-finding error sources - System level descriptions - Representative operational small-aperture - Passive geolocation - Subsystem considerations - Calibration and test of direction-finding systems.
High Frequency Direction Finding Research For Shipboard Use Direction Finder Radio Shipboard Siting And Design Study And Development
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Author : Douglas Travers
language : en
Publisher:
Release Date : 1964
High Frequency Direction Finding Research For Shipboard Use Direction Finder Radio Shipboard Siting And Design Study And Development written by Douglas Travers and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with categories.
Completion of repairs to the AN/SLR-10 spaced-loop antenna including satisfactory access door gaskets is reported. Initial tests on the AN/SLR-11 particularly the antennas and preamplifiers were performed. Equipment developed a number of years ago for azimuth curve plotting was extensively modified in order to replace an obsolete X-Y recorder and to reduce the size and weight of the equipment. The final experimental work toward the selection of a crossed spaced loop direction finding geometry is under way. Mechanical design of the model to be shipboard tested was started. Electronic tuning will be used in the upper frequency range from 2 to 6 mcs, and a self-calibration feature will be included to insure balance of the tuning circuits. The need for more information on required bearing sensitivity is mentioned. Lacking such information, new calculations are under way to set recommended sensitivity requirements for future designs especially in the lower HF range.
Radio Direction Finding And Superresolution
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Author : P. J. D. Gething
language : en
Publisher: IET
Release Date : 1991
Radio Direction Finding And Superresolution written by P. J. D. Gething and has been published by IET this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Science categories.
Enlarged and revised second edition. Modern direction finders, capable of measuring elevation angles as well as azimuth angles on the components of multi-ray wavefields, have become powerful tools for research in ionospheric physics and HF radio propagation. The complexity of the problem of resolving closely-spaced rays requires the combined use of wide aperture antenna arrays, multichannel receiving systems and sophisticated digital processing techniques.