Some Characteristics of the International Space Channel
International Telemetering Conference Proceedings / October 14-16, 1975 / Sheraton Inn, Silver Spring, Maryland === Some physical characteristics of radio transmission links and the technology of PCM modulation combine with the Radio Regulations of the International Telecommunications Union to defin...
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International Foundation for Telemetering
1975
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ndltd-arizona.edu-oai-arizona.openrepository.com-10150-6092972016-05-15T03:01:17Z Some Characteristics of the International Space Channel Noack, T. L. Poland, W. B., Jr. University of Missouri-Rolla NASA International Telemetering Conference Proceedings / October 14-16, 1975 / Sheraton Inn, Silver Spring, Maryland Some physical characteristics of radio transmission links and the technology of PCM modulation combine with the Radio Regulations of the International Telecommunications Union to define a communications channel having a determinable channel capacity, error rate, and sensitivity to interference. These characteristics and the corresponding limitations on EIRP, power flux density, and power spectral density for space service applications are described. The ITU regulations create a critical height of 1027 km where some parameters of the limitation rules change. The nature of restraints on power spectral density are discussed and an approach to a standardized representation of Necessary Bandwidth for the Space Services is described. It is shown that, given the PFD (power flux density) and PSD (power spectral density) limitations of radio regulations, the channel performance is determined by the ratio of effective receiving antenna aperture to system noise temperature. Based on this approach, the method for a quantitative trade-off between spectrum spreading and system performance is presented. Finally, the effects of radio frequency interference between standard systems is analyzed. 1975-10 text Proceedings 0884-5123 0074-9079 http://hdl.handle.net/10150/609297 http://arizona.openrepository.com/arizona/handle/10150/609297 International Telemetering Conference Proceedings en_US http://www.telemetry.org/ Copyright © International Foundation for Telemetering International Foundation for Telemetering |
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International Telemetering Conference Proceedings / October 14-16, 1975 / Sheraton Inn, Silver Spring, Maryland === Some physical characteristics of radio transmission links and the technology of PCM modulation combine with the Radio Regulations of the International Telecommunications Union to define a communications channel having a determinable channel capacity, error rate, and sensitivity to interference. These characteristics and the corresponding limitations on EIRP, power flux density, and power spectral density for space service applications are described. The ITU regulations create a critical height of 1027 km where some parameters of the limitation rules change. The nature of restraints on power spectral density are discussed and an approach to a standardized representation of Necessary Bandwidth for the Space Services is described. It is shown that, given the PFD (power flux density) and PSD (power spectral density) limitations of radio regulations, the channel performance is determined by the ratio of effective receiving antenna aperture to system noise temperature. Based on this approach, the method for a quantitative trade-off between spectrum spreading and system performance is presented. Finally, the effects of radio frequency interference between standard systems is analyzed. |
author2 |
University of Missouri-Rolla |
author_facet |
University of Missouri-Rolla Noack, T. L. Poland, W. B., Jr. |
author |
Noack, T. L. Poland, W. B., Jr. |
spellingShingle |
Noack, T. L. Poland, W. B., Jr. Some Characteristics of the International Space Channel |
author_sort |
Noack, T. L. |
title |
Some Characteristics of the International Space Channel |
title_short |
Some Characteristics of the International Space Channel |
title_full |
Some Characteristics of the International Space Channel |
title_fullStr |
Some Characteristics of the International Space Channel |
title_full_unstemmed |
Some Characteristics of the International Space Channel |
title_sort |
some characteristics of the international space channel |
publisher |
International Foundation for Telemetering |
publishDate |
1975 |
url |
http://hdl.handle.net/10150/609297 http://arizona.openrepository.com/arizona/handle/10150/609297 |
work_keys_str_mv |
AT noacktl somecharacteristicsoftheinternationalspacechannel AT polandwbjr somecharacteristicsoftheinternationalspacechannel |
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1718268506678493184 |