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Line of Sight Alignment Algorithms for Future Gravity Missions

Ales, Filippo and Gath, Peter and Johann, Ulrich and Braxmaier, Claus (2015) Line of Sight Alignment Algorithms for Future Gravity Missions. AIAA SciTech 2015, Kissimmee (5-9 January) 2015, Kissimmee, USA.

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Abstract

Laser interferometry is viable candidate to microwave interferometry as it exploits bet- ter performances in terms of range measurements. Preliminary studies on future gravity missions show that, before addressing their metrology target, these laser terminals of- ten require an intermediate alignment and signal acquisition phase whose complexity can vary according to instrument's layout and the environmental constrains. The line of sight alignment algorithms here presented are designed to autonomously perform spatial scans through laser beam pointing corrections and, if necessary, laser frequency tunings in order to overcome initial pointing and frequency errors. The laser beam guidance algorithms an- alyzed use randomly generated pointing and/or continuous curve patterns while frequency changes (if necessary) are operated through Piezo-electric and thermal tuning. The al- gorithms here presented are tailored for a two-satellite-based heterodyne interferometer and have been tested through numerical simulations. Nevertheless, being the formulation parametric allows the algorithm's to be readapted for a di�erent mission concept.

Item URL in elib:https://elib.dlr.de/93930/
Document Type:Conference or Workshop Item (Speech)
Title:Line of Sight Alignment Algorithms for Future Gravity Missions
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ales, FilippoAstrium GmbH, D-88039 Friedrichshafen, GermanyUNSPECIFIED
Gath, PeterAstrium GmbH FriedrichshafenUNSPECIFIED
Johann, UlrichAstrium GmbH–Satellites, Friedrichshafen, GermanyUNSPECIFIED
Braxmaier, Clausclaus.braxmaier (at) dlr.deUNSPECIFIED
Date:2015
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:laser interferometry, gravity missions
Event Title:AIAA SciTech 2015, Kissimmee (5-9 January) 2015
Event Location:Kissimmee, USA
Event Type:international Conference
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben GRACE Follow-On
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Systems Enabling Technologies
Deposited By: Aguilera, Deborah
Deposited On:18 Feb 2016 10:33
Last Modified:15 Mar 2016 10:48

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