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Reduced-dynamic and kinematic baseline determination for the Swarm mission

Allende-Alba, Gerardo and Montenbruck, Oliver and Jäggi, Adrian and Arnold, Daniel and Zangerl, Franz (2017) Reduced-dynamic and kinematic baseline determination for the Swarm mission. GPS Solutions, 21 (3), pp. 1275-1284. Springer. doi: 10.1007/s10291-017-0611-z. ISSN 1080-5370.

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The Swarm mission of the European Space Agency was launched in November 2013 with the objective of performing measurements of the earth’s magnetic field with unprecedented accuracy. At the beginning of data collection, two satellites started to fly in orbits with a separation in ascending nodes of 1�–1.5� at an altitude of about 480 km, and a third satellite has been placed in a higher orbit with an altitude of 530 km. The three spacecraft are equipped with dual-frequency eight-channel GPS receivers for the generation of precise orbits. Although such orbits support the fulfillment of the primary objectives of the mission, precise space baselines may be helpful for studying the earth’s gravity field, a spin-off application of the Swarm mission. Hitherto, a particular challenge for the computation of precise baselines from Swarm has been the presence of half-cycle ambiguities in GPS carrier phase observations, which complicate the implementation of integer ambiguity resolution methods. The present study shows the feasibility of generating carrier phase observations with full-cycle ambiguities, which in turn has been used to improve the performance of reduced-dynamic and kinematic precise baseline determination schemes. The implemented strategies have been tested in a period of 90 days in 2016. The obtained reduced-dynamic and kinematic baseline products were evaluated by inter-product and inter-agency comparisons using two independent software tools.

Item URL in elib:https://elib.dlr.de/111388/
Document Type:Article
Title:Reduced-dynamic and kinematic baseline determination for the Swarm mission
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Allende-Alba, Gerardodlr/gsocUNSPECIFIED
Montenbruck, Oliverdlr/gsochttps://orcid.org/0000-0003-4783-745X
Jäggi, AdrianaiubUNSPECIFIED
Arnold, DanielaiubUNSPECIFIED
Zangerl, FranzruagUNSPECIFIED
Journal or Publication Title:GPS Solutions
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 1275-1284
Keywords:Swarm; Space baseline determination;Halfcycle ambiguity resolution; GPS
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space System Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Space System Technology
DLR - Research theme (Project):R - Vorhaben Infrastruktur und Unterstützung für Raumflugbetrieb (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Space Operations and Astronaut Training
Deposited By: Montenbruck, Dr.rer.nat.hab. Oliver
Deposited On:13 Mar 2017 15:19
Last Modified:20 Nov 2017 16:28

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