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A Study Of Lunar Surface Radio Communication

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A Study Of Lunar Surface Radio Communication

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Author : Lewis E. Vogler
language : en
Publisher:
Release Date : 1964

A Study Of Lunar Surface Radio Communication written by Lewis E. Vogler and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with Lunar surface radio communication categories.

The problem of point-to-point radio communication on the moon is discussed, and equations and curves are presented to estimate power requirements in lunar communication systems.Assuming a smooth surface, consideration is given to ground wave attenuation over both layered and non-layered grounds, antenna ground losses in situations where ground screens are impractical, noise level estimates in the receiving system, and the effects on propagation of possible lunar ionospheres.An example of the calculation of required power for a particular communication system is given, and further studies are suggested. (Author).

A Study Of Lunar Surface Radio Communication

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Author : United States. National Bureau of Standards
language : en
Publisher:
Release Date : 1964

A Study Of Lunar Surface Radio Communication written by United States. National Bureau of Standards and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with Moon categories.

A Study Of Lunar Surface Radio Communication

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Author : Lewis E. Vogler
language : en
Publisher:
Release Date : 1964

A Study Of Lunar Surface Radio Communication

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Author : Lewis E. Vogler
language : en
Publisher:
Release Date : 1964

Long Range Transhorizon Lunar Surface Radio Wave Propagation In The Presence Of A Regolith And A Sparse Exospheric Plasma

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Author : National Aeronaut Administration (Nasa)
language : en
Publisher:
Release Date : 2020-08-11

Long Range Transhorizon Lunar Surface Radio Wave Propagation In The Presence Of A Regolith And A Sparse Exospheric Plasma written by National Aeronaut Administration (Nasa) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-08-11 with categories.

Long-range, over-the-horizon (transhorizon) radio wave propagation is considered for the case of the Moon. In the event that relay satellites are not available or otherwise unwarranted for use, transhorizon communication provides for a contingency or backup option for non line-of-sight lunar surface exploration scenarios. Two potential low-frequency propagation mechanisms characteristic of the lunar landscape are the lunar regolith and the photoelectron induced plasma exosphere enveloping the Moon. Although it was hoped that the regolith would provide for a spherical waveguide which could support a trapped surface wave phenomena, it is found that, in most cases, the regolith is deleterious to long range radio wave propagation. However, the presence of the plasma of the lunar exosphere supports wave propagation and, in fact, surpasses the attenuation of the regolith. Given the models of the regolith and exosphere adopted here, it is recommended that a frequency of 1 MHz be considered for low rate data transmission along the lunar surface. It is also recommended that further research be done to capture the descriptive physics of the regolith and the exospheric plasma so that a more complete model can be obtained. This comprehensive theoretical study is based entirely on first principles and the mathematical techniques needed are developed as required; it is self-contained and should not require the use of outside resources for its understanding. Manning, Robert M. Glenn Research Center NASA/TM-2008-215463, E-16680 RADIO TRANSMISSION; WAVE PROPAGATION; RADIO WAVES; MOON; SURFACE WAVES; LUNAR SURFACE; DATA TRANSMISSION; WAVEGUIDES; TOPOGRAPHY; REGOLITH; TERRAIN; LUNAR ROCKS; EXOSPHERE

Radio Frequency And Optical Communication Link Trade Studies Between Earth Deep Space Gateway And Lunar Surface

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Author : Stephanie L. Booth
language : en
Publisher:
Release Date : 2019

Radio Frequency And Optical Communication Link Trade Studies Between Earth Deep Space Gateway And Lunar Surface written by Stephanie L. Booth and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.