Partial Reflections of Radio Waves from the Lower Ionosphere PDF Download
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Author: D. J. Connolly
Publisher:
ISBN:
Category : Ionospheric electron density
Languages : en
Pages : 60
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Book Description
The addition of phase difference measurements to partial reflection experiments is discussed, and some advantages of measuring electron density this way are pointed out. The additional information obtained reduces the requirement for an accurate predetermination of collision frequency. Calculations are also made to estimate the errors expected in partial-reflection experiments due to the assumption of Fresnel reflection and to the neglect of coupling between modes. In both cases, the errors are found to be of the same order as known errors in the measurements due to current instrumental limitations.
Author: D. J. Connolly
Publisher:
ISBN:
Category : Ionospheric electron density
Languages : en
Pages : 60
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Book Description
The addition of phase difference measurements to partial reflection experiments is discussed, and some advantages of measuring electron density this way are pointed out. The additional information obtained reduces the requirement for an accurate predetermination of collision frequency. Calculations are also made to estimate the errors expected in partial-reflection experiments due to the assumption of Fresnel reflection and to the neglect of coupling between modes. In both cases, the errors are found to be of the same order as known errors in the measurements due to current instrumental limitations.
Author: D. J. Connolly
Publisher:
ISBN:
Category :
Languages : en
Pages : 164
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Author:
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ISBN:
Category :
Languages : en
Pages : 396
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Contents: Review of Present Knowledge; Partial Reflections--A critical review of the partial reflection experiment, The irregularities responsible for scattering, Observational results, VHF forward scatter Lower ionosphere echoes observed with incoherent scatter radars; Pulse Radio Wave Interaction -- Techniques and methods of analysis, Observational results and miscellaneous aspects of wave interaction.
Author: J. S. Belrose
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ISBN:
Category : Ionospheric radio wave propagation
Languages : en
Pages : 332
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Author: James R. Wait
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ISBN:
Category : Ionospheric radio wave propagation
Languages : en
Pages : 104
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Book Description
The principal results of this technical note are graphical presentations of the attenuation rates, phase velocities, and excitation factors for the dominant modes in the earth-ionosphere waveguide.The frequency range considered is 8 kc/s to 30 kc/s. *The model adopted for the ionosphere has an exponential variation for both the electron density and the collision frequency, and the effect of the earth's magnetic field is considered.Comparison with published experimental data confirms that the minimum attenuation of VLF radio waves in daytime is approximtely at 18 kc/s, while at night it is somewhat lower.The directional dependences of propagation predicted by the theory are also confirmed by experimental data.(Author).
Author:
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Category :
Languages : en
Pages : 448
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Author: Charles Raymond Pirnat
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ISBN:
Category : Ionospheric electron density
Languages : en
Pages : 166
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Author: David John Heilbronn
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ISBN:
Category : Ionosphere
Languages : en
Pages : 338
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Category : Physical instruments
Languages : en
Pages : 104
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Author:
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ISBN:
Category : Nuclear energy
Languages : en
Pages : 1296
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