Dr. Sanjeev Gunawardena, Research Associate Professor of Electrical Engineering

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Education

PhD in Electrical Engineering, Ohio University (2007)

MS in Electrical Engineering, Ohio University (2000)

BS in Electrical Engineering, Ohio University (1997)

BS in Engineering Phisics, Ohio University (1997)

Awards

  • Best Paper of Session for "A Universal GNSS Software Receiver MATLAB® Toolbox for Education and Research," 26th International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS+ 2013), Nashville, TN, September 2013.
  • Best Paper of Session for "Analysis of GPS Pseudorange Natural Biases using a Software Receiver," 26th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2013), Nashville, TN, September 2013.
  • Northrop Grumman Appreciation Award for sharing his knowledge and passion for GNSS receiver design with our students and employees at Navigation Systems Division, October 2011.
  • 10-Year Service Award, Ohio University Avionics Engineering Center, June 2010.
  • Directors Award, Ohio University Avionics Engineering Center, for outstanding work in the transform-domain GPS instrumentation receiver (TRIGR) and GPS software-defined receiver research programs during 2008, May 2009.
  • William E. Jackson Award, RTCA Inc. for Outstanding Contribution to Aviation, May 2008
  • Directors Award, Ohio University Avionics Engineering Center, for Research on Deeply Integrated GPS/INS Systems, Two Patents Filed, Getting the GPS Anomalous Event Monitor (GAEM) Successfully Transferred to the FAA for Installation at the Memphis Airport and Atlantic City, and for Publications on Deep GPS/INS Integration and Software-Defined Radio, June 2006.
  • 5-Year Service Award, Ohio University Avionics Engineering Center, June 2005.
  • Innovation Recognition Award, Ohio University Technology Transfer Office for Outstanding Inventive Contributions to Ohio University Intellectual Property 2002-2004, October 2004.
  • Turning Goals into Reality Aviation Safety Award, NASA, for Outstanding Contributions to Dallas/Fort-Worth Synthetic Vision Systems Team and Exceptional Progress towards Aviation Safety, October 2001.
  • Best Paper of Session Award for "On Implementing GPS Block Processing Techniques in Fixed Point Programmable Hardware," 14th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2001), September 2001.
  • Outstanding Undergraduate, Honors Tutorial College, Engineering Physics program, June 1997
  • Distinguished Professor Scholarship, Department of Physics and Astronomy, College of Arts and Sciences, Ohio University. Merit-based scholarship covering full tuition for three academic years from 1994/95 thru 1996/97.

Publications

Refereed Journals

Gunawardena, S., PanyE , T., CurranE , J., ION GNSS Software-Defined Radio Metadata Standard,” NAVIGATION: Journal of the Institute of Navigation, Spring 2021. https://doi.org/10.1002/navi.407 

S. Gunawardena, J. Raquet, M. Carroll, “Correlator Beamforming for Multipath Mitigation in High Fidelity GNSS Monitoring Applications,” NAVIGATION: Journal of the Institute of Navigation. (to appear, accepted for publication with minor revisions on June 11, 2018).

J. Curran, M. Arizabaleta, T. Pany, S. Gunawardena, “The Institute of Navigation’s GNSS SDR Metadata Standard,” Inside GNSS,November/December 2017. http://insidegnss.com/wp-content/uploads/2018/01/novdec17-STANDARDS.pdf

A. Soloviev, S. Gunawardena, F. Van Graas, "Mitigation of GPS Cross-Correlation Errors using Semi-Codeless Tracking," IEEE Transactions on Aerospace and Electronic Systems, Vol.48, No.1, pp.502-513, January 2012.

F. Van Graas, A. Soloviev, M. Uijt de Haag, S. Gunawardena, "Closed-Loop Sequential Signal Processing and Open-Loop Batch Processing Approaches for GNSS Receiver Design," IEEE Journal of Selected Topics in Signal Processing, Vol.3, No.4, pp.571-586, August 2009.

S. Gunawardena, Z. Zhu, M. Uijt de Haag, F. van Graas, "Remote-Controlled, Continuously Operating GPS Anomalous Event Monitor," NAVIGATION, Journal of The Institute of Navigation, Vol. 56, No. 2, Summer 2009, pp. 97-113.

A. Soloviev, S. Gunawardena, F. van Graas, "Deeply Integrated GPS/Low-Cost IMU for Low CNR Signal Processing: Concept Description and In-Flight Demonstration," NAVIGATION, Journal of The Institute of Navigation, Vol. 55, No. 1, Spring 2008, pp. 1-13.

S. Gunawardena, A. Soloviev, and F. van Graas, "Wideband Transform-Domain GPS Instrumentation Receiver for Signal Quality and Anomalous Event Monitoring," NAVIGATION, Journal of The Institute of Navigation, Vol. 54, No. 4, Winter 2007-2008, pp. 317-331.

A. Soloviev, F. van Graas, S. Gunawardena, "Decoding Navigation Data Messages from Weak GPS Signals," IEEE Transactions on Aerospace and Electronic Systems, Vol.45, No.2, pp.660-666, April 2009.

S. Gunawardena, F. van Graas, "Split-Sum Correlator Simplifies Range Computations in GPS Receiver," Electronics Letters, 7 December 2006, Volume 42, Issue 25, p. 1469-1471.

 

Conference Proceedings

Gunawardena, S., A High Performance Easily Configurable Satnav SDR for Advanced Algorithm Development and Rapid Capability Deployment, Proceedings of the 2021 International Technical Meeting of The Institute of Navigation, Virtual, January 2021. https://www.ion.org/itm/abstracts.cfm?paperID=9957

Stader, J., Gunawardena, S., Leveraging Worldwide, Publicly-Available Data to Create an Automated Satnav Interference Detection System, Proceedings of the 2021 International Technical Meeting of The Institute of Navigation, Virtual, January 2021. https://www.ion.org/itm/abstracts.cfm?paperID=9950

Echeverry† , N. C., BetancesF , A., Gunawardena, S., TempleF , M. A., Signal Quality Monitoring using a Chip Shape Deformation Metric for Global Navigation Satellite System Signals, Proceedings of the 33rd International Technical Meeting of the Satellite Division of The Institute of Navigation, Virtual, September 2020. https://www.ion.org/publications/abstract.cfm?articleID=17694 

Braun* , Andrew D., Gunawardena, S., Performance Analysis of Reference Oscillators and Frequency Synthesizers for use in High-Fidelity Satellite Navigation Receivers, Proceedings of the 2020 International Technical Meeting of The Institute of Navigation, San Diego, California, January 2020, pp. 259-273. https://doi.org/10.33012/2020.17141 

D. Celebucki, S. Graham, S. Gunawardena, “Reversing a Lattice ECP3 FPGA for Bitstream Protection,” 12th Annual IFIP (International Federation for Information Processing) WG 11.10 International Conference on Critical Infrastructure Protection,Arlington, VA, 13 March 2018.

P. Patel, S. Gunawardena, R. K. Martin, “Characterization of Phase and Amplitude Quantization Effects in a Direct Digital Synthesis-based Waveform Generator for Future Software-Defined GPS Payloads,” International Technical Meeting of the Institute of Navigation, Jan 29 - Feb 1 2018, Reston VA. https://www.ion.org/publications/abstract.cfm?articleID=15559

S. Pentecost, S. Gunawardena, “Dynamic Power Allocation with Constant Envelope Transmission for Next Generation Software Defined GPS Payloads,” International Technical Meeting of the Institute of Navigation, Jan 29 - Feb 1 2018, Reston VA.  https://www.ion.org/publications/abstract.cfm?articleID=15560

S. Gunawardena, F. van Graas "Analysis of GPS-SPS Inter-PRN Pseudorange Biases due to Receiver Front-End Components," Proceedings of the 27th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2017), Tampa, FL, September 2014.

S. Gunawardena, T. Pany "Initial Report of Activities of the GNSS SDR Metadata Standard Working Group," Proceedings of the 27th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2017), Tampa, FL, September 2014.

S. Gunawardena, "A Universal GNSS Software Receiver MATLAB® Toolbox for Education and Research," Proceedings of the 26th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2013), Nashville, TN, September 2013, pp. 1560-1576.

S. Gunawardena, F. van Graas, "An Empirical Model for Computing GPS SPS Pseudorange Natural Biases Based on High Fidelity Measurements from a Software Receiver," Proceedings of the 26th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2013), Nashville, TN, September 2013, pp. 1341-1358.

S. Gunawardena, F. van Graas, "Analysis of GPS Pseudorange Natural Biases using a Software Receiver," Proceedings of the 25th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS 2012), Nashville, TN, September 2012, pp. 2141-2149.

S. Gunawardena, F. van Graas, "High Fidelity Chip Shape Analysis of GNSS Signals using a Wideband Software Receiver," Proceedings of the 25th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS 2012), Nashville, TN, September 2012, pp. 874-883.

W. Pelgrum, J. Morton, F. van Graas, S. Gunawardena, M. Bakich, D. Chemey, S. Peng, J. Triplett, A. Vermuru, P. Vikram, "Measurement and Analysis of Artificially-Generated and Natural Ionosphere Scintillations Effects on GNSS Signals," Proceedings of the 2011 International Technical Meeting of The Institute of Navigation, San Diego, CA, January 2011, pp. 950-958.

S. Gunawardena, F. van Graas, "Multi-Channel Wideband GPS Anomalous Event Monitor," Proceedings of the 24th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS 2011), Portland, OR, September 2011, pp. 1957-1968.

·A. Soloviev, S. Gunawardena, "Synthetic Aperture GPS Signal Processing for Multi-Platform Antenna Configurations," Proceedings of the 22nd International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS 2009), Savannah, GA, September 2009, pp. 380-386.

S. Gunawardena, Z. Zhu, F. van Graas, "Triple Frequency RF Front-End for GNSS Instrumentation Receiver Applications," Proceedings of the 21st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2008), Savannah, GA, September 2008, pp. 2984-2999.

Z. Zhu, S. Gunawardena, M. Uijt de Haag, F. van Graas, "Advanced GPS Performance Monitor," Proceedings of the 20th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2007), Fort Worth, TX, September 2007, pp. 415-423.

Z. Zhu, S. Gunawardena, M. Uijt de Haag, F. van Graas, "Satellite Anomaly and Interference Detection Using the GPS Anomalous Event Monitor," Proceedings of the 63rd Annual Meeting of The Institute of Navigation, Cambridge, MA, April 2007, pp. 389-396.

S. Gunawardena, M. Uijt de Haag, F. van Graas, Z. Zhu, "Remote-Controlled, Continuously Operating GPS Anomalous Event Monitor," Proceedings of the International Technical Meeting of the Institute of Navigation Satellite Division, September 26-29, 2006, Fort-Worth, TX.

Soloviev, S. Gunawardena, F. van Graas, "Development of High Performance High Update Rate Reference GPS Receiver," Proceedings of the 18th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2005), Long Beach, CA, September 2005, pp. 1621-1631. (Best of Session Award)

F. van Graas, A. Soloviev, M. Uijt de Haag, S. Gunawardena, M. Braasch, "Comparison of Two Approaches for GNSS Receiver Algorithms: Batch Processing and Sequential Processing Considerations," Proceedings of the 18th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2005), Long Beach, CA, September 2005, pp. 200-211.

S. Gunawardena, A. Soloviev, F. van Graas, "Wideband Dual-Frequency Transform-Domain GPS Instrumentation Receiver for Signal Quality and Anomalous Event Monitoring," Proceedings of the 61st Annual Meeting of The Institute of Navigation, Cambridge, MA, June 2005, pp. 516-527.

A. Soloviev, S. Gunawardena, F. van Graas, "Deeply Integrated GPS/Low-Cost IMU for Low CNR Signal Processing: Flight Test Results and Real Time Implementation," Proceedings of the 17th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2004), Long Beach, CA, September 2004, pp. 1598-1608. (Best of Session Award)

S. Gunawardena, A. Soloviev, F. van Graas, "Real Time Implementation of Deeply Integrated Software GPS Receiver and Low Cost IMU for Processing Low-CNR GPS Signals," Proceedings of the 60th Annual Meeting of The Institute of Navigation, Dayton, OH, June 2004, pp. 108-114.

S. Gunawardena, F. van Graas, A. Soloviev, "Real Time Block Processing Engine for Software GNSS Receivers," Proceedings of the 2004 National Technical Meeting of The Institute of Navigation, San Diego, CA, January 2004, pp. 371-377.

Soloviev,F. van Graas, S. Gunawardena, "Implementation of Deeply Integrated GPS/Low-Cost IMU for Reacquisition and Tracking of Low CNR GPS Signals," Proceedings of the 2004 National Technical Meeting of The Institute of Navigation, San Diego, CA, January 2004, pp. 923-935.

S. Gunawardena, J.M. Rankin, "Controller-Pilot Communications using a VDL Mode 2 Datalink for the NASA Runway Incursion Prevention System," Proceedings of the 20th Digital Avionics Systems Conference (DASC 2001), Daytona Beach, FL, Vol.1, No., pp.2D4/1,2D4/12 Vol.1, 14-18 Oct 2001.

S. Gunawardena, F. van Graas, "On Implementing GPS Block Processing Techniques in Fixed-Point Programmable Hardware," Proceedings of the 14th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2001), Salt Lake City, UT, September 2001, pp. 778-788.

 

Magazine Articles

S. Gunawardena, "A Universal GNSS Software Receiver Toolbox for Education and Research," Inside GNSS, July/August 2014.

A. Soloviev, F. van Graas, S. Gunawardena, M. Miller, "Synthetic Aperture GPS Signal Processing: Concept and Feasibility Demonstration," Inside GNSS, May/June 2009.

S. Gunawardena, Z. Zhu, M. Braasch, "First Look: Observing the GPS L5 Test Transmission from SVN49 Using Software Radio Processing," Inside GNSS, May/June 2009.

Z. Zhu, S. Gunawardena, M. Uijt de Haag, F. van Graas, M. Braasch, "GNSS Watch Dog: A GPS Anomalous Event Monitor," Inside GNSS, Fall 2008.

 

 Invited Talks and Papers

Gunawardena, S., Introduction to Multiband and Multi-Constellation SatNav Receivers using Python, 33rd International Technical Meeting of the Institute of Navigation: Virtual, September 2020 

S. Gunawardena, “Fundamentals of GNSS Receiver Design,” 30th International Technical Meeting of the Institute of Navigation:ION GNSS+ 2017, September 25-29, Portland Oregon (Invited “ION Masters” talk/tutorial).

 

Other Publications

P. Patel, S. Gunawardena, “GNSS Waveform Prototyping Platform (GWPP) for Advanced Signals Research,” 12th Annual Information Meeting of the Consortium of Ohio Universities on Navigation and Timekeeping (COUNT), April 3-4 2018, Columbus Ohio.

 

 

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