elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Datenschutz | Kontakt | English
Schriftgröße: [-] Text [+]

INNOVATIVE TECHNOLOGIES FOR OPTICAL GROUND STATIONS

Humbert, Leif und Hampf, Daniel und Sproll, Fabian und Wagner, Paul und Hasenohr, Thomas und Rodmann, Jens und Riede, Wolfgang (2017) INNOVATIVE TECHNOLOGIES FOR OPTICAL GROUND STATIONS. 7th European Conference on Space Debris, 2017-04-18 - 2017-04-21, Darmstadt, Deutschland.

Dieses Archiv kann nicht den Volltext zur Verfügung stellen.

Kurzfassung

Mega constellations will be operational within a few years and will increase tenfold the current number of active satellites. Each constellation will contain hundreds to thousands satellites typically in orbits from 1100km to 1400km. In order maintain a mega constellation, multiple satellites are launched while other are actively lowered after a service time of 5-7 years. The installation and replacement of satellites is a challenging problem for space traffic management, space situational awareness and a potential threat for orbits becoming unfeasible for thousands of years. The major concern here is the generation of space debris from collisions among the satellites, break ups of the satellites or collisions with already existing space debris, which will add to the already existing population of space debris objects. At the Institute of Physics at the German Aerospace Center new technologies are developed and investigated for the detection and ranging of space debris with optical ground stations. In contrast to well-known orbits of satellites, which are routinely tracked by stations within the ILRS network, the orbits of space debris given by their TLE data from the NORAD catalogue are inaccurate and deviate up to kilometres in each direction. This inaccuracy is insufficient for precise orbit determination and hence collisional warnings. However, at our ground station Uhlandshöhe-Forschungsobservatorium (UFO) we successfully demonstrated a tracking algorithm with an uncertainty of 2arcsec using TLE data for coarse guidance and the solar reflection for tracking. While tracking an object in LEO, we can also determine the slant range with a time of flight (ToF) measurement using the fundamental line at 1064nm of a pulsed Nd:YAG laser at repetition rates up to 5kHz. Instead of guiding the light along a Coudé path, the most common approach, we chose the unconventional approach to guide the light from the source to the transmitter via a passive fiber. The emitted pulse energy is as high as 20µJ with a full beam divergence of 80 arcsec/ 400µrad, which leaves room for further improvements, but cooperative targets in orbits of 6000km like LAGEOS II were successfully tracked and ranged. This allows upgrading already existing optical ground stations with a cost efficient laser ranging system, since all components are commercially available. A new laser station is currently under construction to deliver higher pulse energy along a Coudé path and to deliver a concept for a fast deployable laser ranging station as a building block of a network of laser ranging stations. Each station is built into a standard 20ft ISO container containing a 17inch telescope on an agile mount with an encoder resolution of 26bit In addition each station is equipped with a stare and chase system for detecting unknown objects down to a size of 30cm in LEO. The entire station can be remotely controlled by our proprietary software, such that an operator can run campaigns like bi-static campaigns with two of our own stations independently of any preliminary information from a catalogue, support flight manoeuvres and to support the improvement of orbital elements in a catalogue.

elib-URL des Eintrags:https://elib.dlr.de/116350/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:INNOVATIVE TECHNOLOGIES FOR OPTICAL GROUND STATIONS
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Humbert, Leifleif.humbert (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Hampf, DanielDaniel.Hampf (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Sproll, FabianFabian.Sproll (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Wagner, PaulPaul.Wagner (at) dlr.dehttps://orcid.org/0000-0002-8882-8202NICHT SPEZIFIZIERT
Hasenohr, ThomasThomas.Hasenohr (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Rodmann, JensJens.Rodmann (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Riede, WolfgangWolfgang.Riede (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:April 2017
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Space debris, Laser Ranging,
Veranstaltungstitel:7th European Conference on Space Debris
Veranstaltungsort:Darmstadt, Deutschland
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:18 April 2017
Veranstaltungsende:21 April 2017
Veranstalter :ESA
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Technik für Raumfahrtsysteme
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R SY - Technik für Raumfahrtsysteme
DLR - Teilgebiet (Projekt, Vorhaben):R - Space Debris / Laserbasiertes SSA (alt)
Standort: Stuttgart
Institute & Einrichtungen:Institut für Technische Physik > Aktive optische Systeme
Hinterlegt von: Humbert, Leif
Hinterlegt am:06 Dez 2017 12:15
Letzte Änderung:24 Apr 2024 20:20

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Blättern
Suchen
Hilfe & Kontakt
Informationen
electronic library verwendet EPrints 3.3.12
Gestaltung Webseite und Datenbank: Copyright © Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.