Determination Of The Angle Of Arrival Of Short Wave Radio Signals In Both Horizontal And Vertical Direction
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Determination Of The Angle Of Arrival Of Short Wave Radio Signals In Both Horizontal And Vertical Direction
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Author : Edwin William De Lisle
language : en
Publisher:
Release Date : 1940
Determination Of The Angle Of Arrival Of Short Wave Radio Signals In Both Horizontal And Vertical Direction written by Edwin William De Lisle and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1940 with categories.
An Approach To Measuring The Direction Of Arrival Of Radio Waves In The Presence Of Wave Interference
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Author : Stephen Edward Cooper
language : en
Publisher:
Release Date : 1968
An Approach To Measuring The Direction Of Arrival Of Radio Waves In The Presence Of Wave Interference written by Stephen Edward Cooper and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with categories.
When two radio waves are reflected from the ionosphere and arrive at an antenna via two different elevation angles, the measurement of the angle of arrival of the stronger wave is influenced by the weaker interfering wave. This phenomenon is examined in detail, and an approach to measuring the elevation angle of the stronger wave is presented. In deriving completely general equations for the electric field in space, it is assumed that each wave is elliptically polarized and that they arrive at the antenna with a time phase difference, beta. An equation for the phase between the voltages induced in the antenna system is derived. This equation is analyzed using a digital computer to determine the effect of varying the relative field strength and beta. Assuming the angle of arrival of the stronger wave is desired, it is shown that the normal to the composite wavefront is in serious error with respect to this angle. The error is especially severe for beta near 180 degrees and for comparable field intensities. Since the polarization of each wave and beta are time dependent, the phase is averaged, assuming a random variation in beta and an arbitrary variation in polarization. It is shown that time averaging yields the phase associated with the elevation angle of the stronger wave, providing the stronger remained so throughout the averaging time. This is shown analytically and by use of a digital computer. (Author).
Determination Of The Direction Of Arrival Of Short Radio Waves
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Author : H. T. Friis
language : en
Publisher:
Release Date : 1934
Determination Of The Direction Of Arrival Of Short Radio Waves written by H. T. Friis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1934 with categories.
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.
Ionospheric Radio Propagation
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Author : Central Radio Propagation Laboratory (U.S.)
language : en
Publisher:
Release Date : 1948
Ionospheric Radio Propagation written by Central Radio Propagation Laboratory (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1948 with Atmosphere, Upper categories.
Nbs Technical Note
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Author :
language : en
Publisher:
Release Date : 1965-04
Nbs Technical Note written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965-04 with Physical instruments categories.
Bell Telephone System Technical Publications
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Author : Bell Telephone Laboratories
language : en
Publisher:
Release Date : 1946
Bell Telephone System Technical Publications written by Bell Telephone Laboratories and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1946 with Electric engineering categories.
Hearings
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Author : United States. Congress. House. Committee on Science and Astronautics
language : en
Publisher:
Release Date : 1959
Hearings written by United States. Congress. House. Committee on Science and Astronautics and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1959 with categories.
Journal Of Research Of The National Bureau Of Standards
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Author :
language : en
Publisher:
Release Date : 1959
Journal Of Research Of The National Bureau Of Standards written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1959 with Engineering categories.
Bell Telephone System Technical Publications
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Author :
language : en
Publisher:
Release Date : 1934
Bell Telephone System Technical Publications written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1934 with Electrical engineering categories.