A ONE-WAY DATA LINK OPERATING WITH EXTREME WEAK SIGNALS
International Telemetering Conference Proceedings / October 22-25, 1984 / Riviera Hotel, Las Vegas, Nevada For maritime applications of distress communications via geostationary satellites a special method of signal processing was developed, called superposition technique. The data frame containing...
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International Foundation for Telemetering
1984
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ftunivarizona:oai:repository.arizona.edu:10150/610932 2023-05-15T17:37:59+02:00 A ONE-WAY DATA LINK OPERATING WITH EXTREME WEAK SIGNALS Goebel, Walter DFVLR - German Aerospace Research Establishment 1984-10 http://hdl.handle.net/10150/610932 en_US eng International Foundation for Telemetering http://www.telemetry.org/ 0884-5123 0074-9079 http://hdl.handle.net/10150/610932 International Telemetering Conference Proceedings Copyright © International Foundation for Telemetering Superposition technique message integration signal processing text Proceedings 1984 ftunivarizona 2020-06-14T08:14:09Z International Telemetering Conference Proceedings / October 22-25, 1984 / Riviera Hotel, Las Vegas, Nevada For maritime applications of distress communications via geostationary satellites a special method of signal processing was developed, called superposition technique. The data frame containing the alert message is transmitted from a distress equipment repeatedly. After being relayed by the satellite the signal is detected and improved by superimposing the frames. Around 14 dB is the actual processing gain. Thus a distress buoy is able to transfer a message from all over the world with high reliability by only transmitting a power of 50 mW omnidirectionally over a slant range of about 40 000 km. The described system, called the Distress Radio Call System (DRCS) was tested in a Coordinated Trials Program (CTP) of 6 nations. Both in a simulation phase and in a field test under exactly the same environmental conditions the DRCS with its superposition technique was able to detect signals with lowest signal-to-noise-density ratio without error. In laboratory tests using GAUSS channel conditions, a system threshold of 13 dB-Hz could be demonstrated. In a real environment (North Cape) 15 dB-Hz was the lower limit for error-free reception. CCIR approved a recommendation in June, 1984 for a system operating through geostationary satellites at 1.6 GHz being a DRCS-type with very little modifications. International Foundation for Telemetering Proceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection. Conference Object North Cape The University of Arizona: UA Campus Repository North Cape ENVELOPE(165.700,165.700,-70.650,-70.650) |
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Open Polar |
collection |
The University of Arizona: UA Campus Repository |
op_collection_id |
ftunivarizona |
language |
English |
topic |
Superposition technique message integration signal processing |
spellingShingle |
Superposition technique message integration signal processing Goebel, Walter A ONE-WAY DATA LINK OPERATING WITH EXTREME WEAK SIGNALS |
topic_facet |
Superposition technique message integration signal processing |
description |
International Telemetering Conference Proceedings / October 22-25, 1984 / Riviera Hotel, Las Vegas, Nevada For maritime applications of distress communications via geostationary satellites a special method of signal processing was developed, called superposition technique. The data frame containing the alert message is transmitted from a distress equipment repeatedly. After being relayed by the satellite the signal is detected and improved by superimposing the frames. Around 14 dB is the actual processing gain. Thus a distress buoy is able to transfer a message from all over the world with high reliability by only transmitting a power of 50 mW omnidirectionally over a slant range of about 40 000 km. The described system, called the Distress Radio Call System (DRCS) was tested in a Coordinated Trials Program (CTP) of 6 nations. Both in a simulation phase and in a field test under exactly the same environmental conditions the DRCS with its superposition technique was able to detect signals with lowest signal-to-noise-density ratio without error. In laboratory tests using GAUSS channel conditions, a system threshold of 13 dB-Hz could be demonstrated. In a real environment (North Cape) 15 dB-Hz was the lower limit for error-free reception. CCIR approved a recommendation in June, 1984 for a system operating through geostationary satellites at 1.6 GHz being a DRCS-type with very little modifications. International Foundation for Telemetering Proceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection. |
author2 |
DFVLR - German Aerospace Research Establishment |
format |
Conference Object |
author |
Goebel, Walter |
author_facet |
Goebel, Walter |
author_sort |
Goebel, Walter |
title |
A ONE-WAY DATA LINK OPERATING WITH EXTREME WEAK SIGNALS |
title_short |
A ONE-WAY DATA LINK OPERATING WITH EXTREME WEAK SIGNALS |
title_full |
A ONE-WAY DATA LINK OPERATING WITH EXTREME WEAK SIGNALS |
title_fullStr |
A ONE-WAY DATA LINK OPERATING WITH EXTREME WEAK SIGNALS |
title_full_unstemmed |
A ONE-WAY DATA LINK OPERATING WITH EXTREME WEAK SIGNALS |
title_sort |
one-way data link operating with extreme weak signals |
publisher |
International Foundation for Telemetering |
publishDate |
1984 |
url |
http://hdl.handle.net/10150/610932 |
long_lat |
ENVELOPE(165.700,165.700,-70.650,-70.650) |
geographic |
North Cape |
geographic_facet |
North Cape |
genre |
North Cape |
genre_facet |
North Cape |
op_relation |
http://www.telemetry.org/ 0884-5123 0074-9079 http://hdl.handle.net/10150/610932 International Telemetering Conference Proceedings |
op_rights |
Copyright © International Foundation for Telemetering |
_version_ |
1766138210057977856 |