Eamonn Glennon

Part-time PhD Student (since 2003) and Software Team Leader
Sigtec Navigation Pty. Ltd.
Canberra, Australia
Email: eglennon@signav.com.au

M.Eng.Sc. (Electrical Engineering), ADFA, University of New South Wales, Sydney, Australia, 2000.

B.E. (Electrical Engineering) (Hon.1), University of New South Wales, Sydney, Australia, 1990.

B.Sc. (Computer Science), University of New South Wales, Sydney, Australia, 1988.

August 1994 to Present, Software Team Leader, Sigtec Navigation Pty Ltd, Canberra.

July 1991 to August 1994, Software Systems Engineer, Auspace Limited, Canberra.

February 1990 to June 1991, Professional Officer (Engineer) Class 1, Combat Data Systems Centre (CDSC), Department of Defence, Canberra.

1987 to 1989, Cadet Engineer, Department of Defence, Sydney.

• Real-time embedded firmware development (design, implementation and test).
• Real-time operating systems, including muCOS-II and muITRON3.0 based systems.
• Debugging of embedded firmware using in-circuit emulators, software simulators and logic analysers.
• Development & debugging GPS receiver hardware designs.
• Digital signal processing using the DSP56001/2 and ARM7TDMI processors.
• Kalman filtering algorithms.
• C and assembler programming.
• Weak GPS signal tracking algorithms.
• Software configuration control and configuration management.
• Production and debugging of prototype pieces of electronic hardware.

Research Project:

The use of GPS as a remote sensing tool is a relatively recent development that involves observing & using GPS multipath reflected signals. The signal power present within these reflections is typically less than the direct path and the observation of these signals can be hindered by the presence of other strong GPS signals due to the cross correlation between the strong and weak signal PRN codes. This is also known as the Ônear-farÕ problem. This has prompted research into the problem of mitigating these cross correlation effects, with two techniques being developed that can assist in reducing the multiple access interference.

One of the methods, called Adaptive Orthogonalization Using Constraints (AOUC), involves adaptively constructing a new despreading code that does not observe the components of the strong signal within the weak signal space. The second method called Delayed Parallel Interference Cancellation (DPIC) is a post correlation cancellation technique that involves the use of slaved correlator channels to calculate the corresponding cross correlation noise which is subsequently removed within the GPS software processing. Both methods have been validated using a software GPS correlator and work is currently underway to implement the DPIC correlation technique on an FPGA platform.

Other activities performed as part of the part time PhD program include the development of software for the UNSW Namuru FPGA receiver and a study into the feasibility of using GPS as a bistatic-radar for air-target detection.

List of Publications:

Dempster, AG and Glennon, EP (2007), Apparatus and Method for the Mitigation of Cross Correlation in GPS System, United States of America Patent Application Number 20070058696.

Glennon, EP and Bryant, RC (2007), Method and Apparatus for Reconstructing Time of Transmit from Assisted or Weak Signal GPS Observations, United States of America Patent Application Number 20070024500.

Glennon, EP, Dempster, AG and Rizos, CR., (2006). Feasibility of air target detection using GPS as a bistatic radar. Journal of Global Positioning Systems, 5(1-2), 119-126.

Glennon, EP, Bryant, RC and Dempster, AG (2006), Delayed Parallel Interference Cancellation for GPS C/A Code Receivers,12th IAIN World Congress and 2006 International Symposium on GPS/GNSS, Jeju, Korea, 18-20 October, 261-266.

Glennon, EP and Dempster, AG (2006), Cross Correlation Mitigation by Adaptive Orthogonalization Using Constraints - New Results, 19th Int. Tech. Meeting of the Satellite Division of the U.S. Inst. of Navigation, 1811-1820.

Glennon, EP, Dempster, AG and Rizos, CR (2005), Feasibility of Air Target Detection using GPS as a Bistatic Radar, International Symposium on GPS/GNSS, Hong Kong, 8-10 December, paper 9C-04.

Glennon, EP and Dempster, AG. (2005), A novel cross correlation mitigation technique. 18th Int. Tech. Meeting of the Satellite Division of the U.S. Institute of Navigation, Long Beach, California, 13-16 September, 190-199.

Glennon, EP. and Bryant, RC., (2005), Solution of timing errors for AGPS. 18th Int. Tech. Meeting of the Satellite Division of the U.S. Institute of Navigation, Long Beach, California, 13-16 September, 136-141.

Glennon, EP and Dempster, AG (2004), A Review of GPS Cross Correlation Mitigation Techniques, The 2004 International Symposium on GNSS/GPS, Sydney, Australia, 6-8 December.

Bryant, R., Dougan, S., & Glennon E. (2001), GPS receiver algorithms and system for weak signal operation, 14th Int. Tech. Meeting of the Satellite Division of the U.S. Inst. of Navigation, Salt Lake City, Utah, 11-14 September, 1500-1510.