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The Namuru Receiver as Development Platform for Spaceborne GNSS Applications

Grillenberger, Andreas and Rivas, Rodrigo and Markgraf, Markus and Mumford, Peter and Parkinson, Kevin and Rizos, Chris (2008) The Namuru Receiver as Development Platform for Spaceborne GNSS Applications. In: 4th ESA Workshop on Satellite Navigation User Equipment Technologies. Navitec 2008, 2008-12-10 - 2008-12-12, Noordwijk, Netherlands.



GPS is a well established navigation system in current spaceflight missions. Affordable GPS receivers for small satellite and sounding rocket missions are usually based on Commercial Off The Shelf (COTS) products. Many of these receivers are limited to single frequency tracking and utilise custom ASICs for the signal processing. The Phoenix receiver is an example of a commercially available receiver with custom software modifications by DLR. This receiver is based on the GP2021 baseband processor and is therefore not flexible enough to implement anything else besides GPS L1 tracking. To overcome this limitation it has been decided to migrate to the Namuru GNSS receiver platform for the development of new GNSS applications. The Namuru system is based on a reconfigurable FPGA and has been developed by the University of New South Wales (UNSW). This platform allows the baseband processing hardware to be completely customised and allows the implementation of software for different areas of research. The DLR’s research projects aim at multiple frontend systems, new signals and spaceborne GNSS reflectometry. As a first step we have ported the flight proven Phoenix software to the Namuru receiver. The accuracy of the navigation solution has been validated in both low earth orbit and ballistic rocket simulations and a comparison with the Phoenix receiver is shown. In the second step, an antenna array system for spaceborne GNSS reflectometry is being implemented. Narrowband beamforming is performed after carrier demodulation or PRN correlation, significantly lowering the requirements for the analogue front-end and at the same time allowing the use of already space proven hardware and software GPS architecture available at our department. The paper provides a description of the Namuru development board and preliminary results obtained in a signal simulation test bed. In addition, ongoing developments for special applications such as GNSS reflectometry are addressed.

Item URL in elib:https://elib.dlr.de/56548/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:The Namuru Receiver as Development Platform for Spaceborne GNSS Applications
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Mumford, PeterUniversity of New South Wales, Sydney, AustraliaUNSPECIFIED
Parkinson, KevinUniversity of New South Wales, Sydney, AustraliaUNSPECIFIED
Rizos, ChrisUniversity of New South Wales, Sydney, AustraliaUNSPECIFIED
Date:10 December 2008
Journal or Publication Title:4th ESA Workshop on Satellite Navigation User Equipment Technologies
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
European Space Agency (ESA), UNSPECIFIED
Keywords:GPS GNSS Namuru Reflectometry COTS
Event Title:Navitec 2008
Event Location:Noordwijk, Netherlands
Event Type:international Conference
Event Dates:2008-12-10 - 2008-12-12
Organizer:European Space Agency (ESA)
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W KN - Kommunikation/Navigation
DLR - Research area:Space
DLR - Program:W KN - Kommunikation/Navigation
DLR - Research theme (Project):W - Vorhaben GNSS2/Neue Dienste und Produkte (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Space Operations and Astronaut Training > GSOC-German Space Operations Center
Deposited By: Grillenberger, Andreas
Deposited On:22 Jan 2009
Last Modified:31 Jul 2019 19:23

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