Time Synchronization Capability of SPARx – The Queensland University of Technology (QUT) GPS Receivers

Bruggemann, Troy S. & Enderle, Werner (2004) Time Synchronization Capability of SPARx – The Queensland University of Technology (QUT) GPS Receivers. In 2004 International Symposium on GNSS/GPS, 6–8 December 2004, Sydney, Australia.


In early 2002 Queensland University of Technology (QUT) commenced to develop its own GPS receiver for space applications called SPARx (SPace Applications Receiver), such as sounding rockets and satellites in Low Earth Orbits. The QUT GPS receiver development is based on the Mitel GP2000 Chip set and is a modification of the Mitel Orion GPS receiver. The base for the software development is the Mitel GPS Architect development kit. In 2003 work was undertaken to extend the QUT GPS Receiver SPARx to have precise time synchronization capability. The software was improved to produce an accurate timing reference so that measurements and solutions time tagged to Co-ordinated Universal Time (UTC) may be obtained. In addition, work was undertaken so that the receiver has the ability to output a precise hardware time signal in the form of a pulse per second. This can be used as a time reference to synchronize the sub-systems onboard a satellite and provide precise timing for operations and measurements. This paper will discuss the implementation aspects of the pulse per second and synchronization issues, the high level concept and the results achieved. This work for time synchronization capability is also essential for the receiver’s use in 3-axis attitude determination based on GPS differential carrier phase measurements.

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ID Code: 5881
Item Type: Conference Paper
Refereed: No
Subjects: Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > AEROSPACE ENGINEERING (090100) > Aerospace Engineering not elsewhere classified (090199)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Owner: Copyright 2004 (please consult author)
Deposited On: 18 Dec 2006 00:00
Last Modified: 03 Sep 2013 04:56

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