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SPACE COMMUNICATIONS PROTOCOLS FOR FUTURE OPTICAL SATELLITE-DOWNLINKS

Giggenbach, Dirk und Moll, Florian und Fuchs, Christian und de Cola, Tomaso und Mata-Calvo, Ramon (2011) SPACE COMMUNICATIONS PROTOCOLS FOR FUTURE OPTICAL SATELLITE-DOWNLINKS. 62nd International Astronautical Congress, 3.Okt - 7.Okt 2011, Cape Town, South Africa.

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Kurzfassung

As telemetry downlink data rates from EO-satellites increase and available radio frequency transmission spectrum narrows, optical data downlinks based on directed modulated laser sources become a beneficial alternative. While solving the bottleneck of data rate by providing licensing-free transmission at up to multi-Gigabit per second data rates, the required onboard terminal hardware is at the same time small and uses low transmit power. However, the transmission channel is very different to RF downlinks as new atmospheric effects have to be regarded, mainly cloud blockage, increased attenuation at low elevations, and index of refraction turbulence. To enable also with optical downlinks the level of global cooperation prevailing in RF downlink operations, it is necessary to elaborate and standardize optimized optical transmission formats. We present here the characteristics of optical LEO downlinks and the requirements they impose on the transmission data formats and protocols. We consider how existing RF satellite transmission-securing formats can be adopted and extended to enable reliable and efficient optical downlinks.

Dokumentart:Konferenzbeitrag (Vortrag, Paper)
Titel:SPACE COMMUNICATIONS PROTOCOLS FOR FUTURE OPTICAL SATELLITE-DOWNLINKS
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Giggenbach, Dirkdirk.giggenbach@dlr.de
Moll, Florianflorian.moll@dlr.de
Fuchs, Christianchristian.fuchs@dlr.de
de Cola, Tomasotomaso.decola@dlr.de
Mata-Calvo, Ramonramon.matacalvo@dlr.de
Datum:4 Oktober 2011
Referierte Publikation:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:optical LEO satellite downlinks, optical downlink channel, fading mitigation, error correction protocols, KNOCGOP
Veranstaltungstitel:62nd International Astronautical Congress
Veranstaltungsort:Cape Town, South Africa
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:3.Okt - 7.Okt 2011
Veranstalter :IAF
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Verkehr
HGF - Programmthema:Verkehrsmanagement
DLR - Schwerpunkt:Verkehr
DLR - Forschungsgebiet:V VM - Verkehrsmanagement
DLR - Teilgebiet (Projekt, Vorhaben):V - VABENE (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Kommunikation und Navigation > Digitale Netze
Hinterlegt von: Dr.-Ing. Dirk Giggenbach
Hinterlegt am:18 Okt 2011 08:22
Letzte Änderung:24 Jan 2012 11:58

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