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GPS Tracking of a Nanosatellite – The CanX-2 Flight Experience

Kahr, Erin and Montenbruck, Oliver and O'Keefe, Kyle and Skone, Susan and Urbanek, J. and Bradbury, L. and Fenton, Pat (2011) GPS Tracking of a Nanosatellite – The CanX-2 Flight Experience. 8th International ESA Conference on Guidance, Navigation & Control Systems, 5.-10. Juni 2011, Karlsbad, CZ.

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CanX-2, which was launched in April 2008, is a Canadian “triple-CubeSat” satellite that carries a dualfrequency GPS receiver to assess the feasibility of ionospheric profiling from a nanosatellite platform. A NovAtel OEM4-G2L receiver is employed on CanX-2, which offers geodetic grade measurements at favorably low power. While various other CubeSats have carried GPS receivers into space before, CanX-2 is apparently the first mission to successfully deliver GPS navigation fixes and raw measurements thanks to proper attitude control and onboard data handling systems. Even though the achieved signal quality falls below expectations due to limitations of the employed antenna system, the receiver provides both L1 C/A tracking and semicodeless L2 P(Y) tracking on a regular basis. The paper presents the CanX-2 GPS subsystem, the receiver qualification for space use and the necessary tasks for receiver operations. The in-flight performance is characterized in terms of tracking coverage, raw measurements and navigation accuracy. Furthermore, shortarc precise orbit determination results based on dual-frequency carrier phase measurements are presented, which are considered to be accurate to the meter level.

Item URL in elib:https://elib.dlr.de/73987/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:GPS Tracking of a Nanosatellite – The CanX-2 Flight Experience
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kahr, ErinUniv. CalgaryUNSPECIFIED
Montenbruck, OliverDLRUNSPECIFIED
O'Keefe, KyleUniv. of CalgaryUNSPECIFIED
Skone, SusanUniv. of CalgaryUNSPECIFIED
Urbanek, J.Univ. TorontoUNSPECIFIED
Bradbury, L.Univ. TorontoUNSPECIFIED
Date:June 2011
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:GPS, Cubesat, orbit determination, CanX-2
Event Title:8th International ESA Conference on Guidance, Navigation & Control Systems
Event Location:Karlsbad, CZ
Event Type:international Conference
Event Dates:5.-10. Juni 2011
HGF - Research field:other
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:no assignment
DLR - Program:no assignment
DLR - Research theme (Project):no assignment
Location: Oberpfaffenhofen
Institutes and Institutions:Space Operations and Astronaut Training
Deposited By: Montenbruck, Dr.rer.nat.hab. Oliver
Deposited On:23 Jan 2012 17:55
Last Modified:23 Jan 2012 17:55

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