Previously he was a senior research engineer and principal investigator with the Ohio University Avionics Engineering Center, where he led several GNSS software receiver based R&D projects. Dr. Gunawardena earned B.S. in engineering physics, B.S.E.E., M.S.E.E. and Ph.D. in electrical engineering from Ohio University. He holds five patents in the area of advanced GNSS receiver design. His research interests include RF design, digital systems design, high performance computing, software-defined radio, and all aspects of GNSS receivers and associated signal processing.