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QZS-1 Orbit and Clock Determination

Steigenberger, Peter and Hauschild, André and Montenbruck, Oliver and Rodriguez-Solano, Carlos (2012) QZS-1 Orbit and Clock Determination. ION-ITM-2012, 30. Jan. -1. Feb. 2012, Newport Beach, CA.

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QZS-1 is the first satellite of the Japanese Quasi-Zenith Satellite System (QZSS) launched in September 2010. QZSS provides regional augmentation capabilities to users of the Global Positioning System (GPS) in Asia and the Pacific. Five stations of the Cooperative Network for GIOVE Observation (CONGO) are able to track the QZSS L1, L2, and L5 navigation signals. Together with the GPS observations of these stations, QZS-1 orbit and clock parameters were estimated. Various orbit parameterizations were tested and a sub-meter accuracy of the best orbits could be achieved. Differences of orbits obtained from various linear combinations are on the decimeter level and differential code biases are on the few nanosecond level. QZS-1 is equipped with a rubidium atomic clock that is similar to the ones of the GPS Block IIF satellites. At periods up to 100 s both clocks show a very similar performance. However, short periodic variations with a peak-to-peak amplitude of about 4 cm were detected in the QZS-1 clock estimates. Three time intervals with different periods of 13.6 – 15.5 minutes could be identified. Three way carrier phase analysis confirmed the presence of these variations. The origin of these periodicities is unknown.

Item URL in elib:https://elib.dlr.de/82097/
Document Type:Conference or Workshop Item (Paper)
Title:QZS-1 Orbit and Clock Determination
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Steigenberger, PeterTUMUNSPECIFIED
Rodriguez-Solano, CarlosIAPG/TUMUNSPECIFIED
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:QZSS, GNSS, rubidium clock
Event Title:ION-ITM-2012
Event Location:Newport Beach, CA
Event Type:international Conference
Event Dates:30. Jan. -1. Feb. 2012
Organizer:Institute of Navigation
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W - no assignment
DLR - Research area:Space
DLR - Program:W - no assignment
DLR - Research theme (Project):W - no assignment (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Space Operations and Astronaut Training
Deposited By: Montenbruck, Dr.rer.nat.hab. Oliver
Deposited On:26 Apr 2013 15:25
Last Modified:26 Apr 2013 15:25

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