Waveforms And Relative Phase Stability Of Transients Radiated From A Helicopter Supported Antenna Wire
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Waveforms And Relative Phase Stability Of Transients Radiated From A Helicopter Supported Antenna Wire
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Author : E. A. Lewis
language : en
Publisher:
Release Date : 1965
Waveforms And Relative Phase Stability Of Transients Radiated From A Helicopter Supported Antenna Wire written by E. A. Lewis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Hanscom AFB (Mass.) categories.
A nearly vertical antenna wire varying in length from 3000 to 8000 ft was shock-excited by a high-voltage source. The resulting radiation fields were received at distances of about 600 km by two stations separated laterally so as to subtend an angle of about 15© at the source. The difference in wavefront arrival times at the two stations, observed for 101 transmissions, showed an average absolute deviation from the mean of about only 1/2 [mu]s. This figure includes the effects of possible source asymmetries, sferics noise, instrumental errors, and wave propagation. Typical oscillograms of antenna currents and radiation fields are given. It is shown that the amplitudes and durations of the pulse envelopes, the amplitudes and durations of the first half-cycles, and the quasi-frequencies of the pulses are in good agreement with a theory that takes energy losses into account.
Waveforms And Relative Phase Stability Of Transients Radiated From A Helicopter Supported Antenna Wire
DOWNLOAD
Author : E. A. Lewis
language : en
Publisher:
Release Date : 1965
Waveforms And Relative Phase Stability Of Transients Radiated From A Helicopter Supported Antenna Wire written by E. A. Lewis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Hanscom AFB (Mass.) categories.
A nearly vertical antenna wire varying in length from 3000 to 8000 ft was shock-excited by a high-voltage source. The resulting radiation fields were received at distances of about 600 km by two stations separated laterally so as to subtend an angle of about 15° at the source. The difference in wavefront arrival times at the two stations, observed for 101 transmissions, showed an average absolute deviation from the mean of about only 1/2 [mu]s. This figure includes the effects of possible source asymmetries, sferics noise, instrumental errors, and wave propagation. Typical oscillograms of antenna currents and radiation fields are given. It is shown that the amplitudes and durations of the pulse envelopes, the amplitudes and durations of the first half-cycles, and the quasi-frequencies of the pulses are in good agreement with a theory that takes energy losses into account.
Wave Phenomena In Ionized Gases
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Author : Cap Haskell
language : en
Publisher:
Release Date : 1965
Wave Phenomena In Ionized Gases written by Cap Haskell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Electromagnetic waves categories.
Characteristic Frequencies From Infrared And Elastic Data
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Author : Johannes N. Plendl
language : en
Publisher:
Release Date : 1965
Characteristic Frequencies From Infrared And Elastic Data written by Johannes N. Plendl and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Dielectrics categories.
The Preparation And Structure Of Thin Films Of Boron On Silicon
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Author : E. T. Peters
language : en
Publisher:
Release Date : 1965
The Preparation And Structure Of Thin Films Of Boron On Silicon written by E. T. Peters and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Boron categories.
Asymptotic Solutions Of Dipoles In A Semi Infinite Medium
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Author : Kondagunta U. Sivaprasad
language : en
Publisher:
Release Date : 1965
Asymptotic Solutions Of Dipoles In A Semi Infinite Medium written by Kondagunta U. Sivaprasad and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Antennas (Electronics) categories.
A theoretical analysis is made of the electromagnetic fields in two homogeneous media separated by a plane interface with a point source located in the denser medium. The solution is expressed in the form of integrals which cannot be evaluated explicitly. Asymptotic evaluations of the integrals have been made by many investigators using the saddlepoint technique. In the present work, all known asymptotic results are presented in one comprehensive form, using a modification of the method suggested by Lighthill for the asymptotic evaluation of the Fourier integrals. The regions of validity of the solutions are indicated wherever possible. The advantage of this method over others is its ease and simplicity. The present results agree term by term with the earlier ones of Banos and Wesley (1953-1954), and Paul (1959), who investigated the case of a source and receiver close to the interface, and an arbitrary location of source and receiver, respectively. The results obtained in the report are also compared with those of Stein (1955). (Author).
An Anomaly In The Resistivity Temperature Profile Of Ultrapure Phenanthrene
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Author : Paul A. Andrews
language : en
Publisher:
Release Date : 1965
An Anomaly In The Resistivity Temperature Profile Of Ultrapure Phenanthrene written by Paul A. Andrews and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Phenanthrene categories.
The Nonlinear Interaction Of A Radio Frequency Wave With An Inhomogeneous Plasma Slab
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Author : Robert J. Papa
language : en
Publisher:
Release Date : 1965
The Nonlinear Interaction Of A Radio Frequency Wave With An Inhomogeneous Plasma Slab written by Robert J. Papa and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Electromagnetic waves categories.
Absorption Spectra Of H2 In The Vacuum Ultraviolet Region
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Author : Takeshi Namioka
language : en
Publisher:
Release Date : 1965
Absorption Spectra Of H2 In The Vacuum Ultraviolet Region written by Takeshi Namioka and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Absorption spectra categories.
The Spectral Shifts Of Truncated Sinusoids
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Author : Kurt Toman
language : en
Publisher:
Release Date : 1965
The Spectral Shifts Of Truncated Sinusoids written by Kurt Toman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Radio waves categories.