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A Laser Link From Lunar Surface Employing Line-of-Sight MIMO

Schwarz, Robert and Giggenbach, Dirk and Knopp, Marcus Thomas and Knopp, Andreas (2021) A Laser Link From Lunar Surface Employing Line-of-Sight MIMO. Frontiers in Space Technologies, 2. Frontiers Media S.A.. doi: 10.3389/frspt.2021.750938. ISSN 2673-5075.

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Official URL: https://www.frontiersin.org/articles/10.3389/frspt.2021.750938/full

Abstract

Future exploration of our planetary system relies on the Moon as a base and stepping stone to other planets. A high-rate data connection to this celestial body is, therefore, imperative. Free-space optical (FSO) communications will enable continuous broadband connectivity to Earth. Currently pursued concepts incorporate data relay satellites orbiting the Moon, where each individual satellite terminal has to overcome the lunar distance facing restraints on telescope apertures and on beam pointing and tracking accuracies. We propose a concept of one dedicated link originating from a robotic telescope station installed on the lunar surface. We study the conceptual architecture of such an FSO ground node at the lunar surface with a spotlight on the link design at the physical layer. In particular, we increase the FSO channel capacity through multiple transmission- and receiving-apertures. Our findings encourage the application of the Line-of-Sight (LOS) multiple-input multiple-output (MIMO) technology to FSO communications at large link distances typically coming along with space missions, as thereby the maximum MIMO capacity can be achieved. Directing our study on the link eometry such connections seem technically feasible at relatively low system complexity with the receivers located at a single site and the transmitters only few meters apart.

Item URL in elib:https://elib.dlr.de/146233/
Document Type:Article
Title:A Laser Link From Lunar Surface Employing Line-of-Sight MIMO
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Schwarz, RobertUniversität der Bundeswehr MünchenUNSPECIFIED
Giggenbach, DirkDirk.Giggenbach (at) dlr.dehttps://orcid.org/0000-0003-1720-3464
Knopp, Marcus ThomasMarcus.Knopp (at) dlr.dehttps://orcid.org/0000-0002-6819-6279
Knopp, AndreasUniversität der Bundeswehr MünchenUNSPECIFIED
Date:25 October 2021
Journal or Publication Title:Frontiers in Space Technologies
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:No
In ISI Web of Science:No
Volume:2
DOI :10.3389/frspt.2021.750938
Editors:
EditorsEmailEditor's ORCID iD
Mazzali, NicolòESTECUNSPECIFIED
Publisher:Frontiers Media S.A.
Series Name:Frontiers in Space Technologies
ISSN:2673-5075
Status:Published
Keywords:optical lunar downlink, lunar orbit geometry, channel capacity, multiple-input multiple-output, free-space optic, deep-space laser communications, line-of-sight channel, KNOCGOP
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication, Navigation, Quantum Technology
DLR - Research area:Raumfahrt
DLR - Program:R KNQ - Communication, Navigation, Quantum Technology
DLR - Research theme (Project):R - OSIRIS Future
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Satellite Networks
Deposited By: Giggenbach, Dr.-Ing. Dirk
Deposited On:08 Dec 2021 09:08
Last Modified:17 Dec 2021 04:12

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