Gregory Solyar, Research Associate GEST Research Group: Information Science and Educational Technology GSFC Code: 900.1 Mailing Address: Earth Sciences Directorate Office NASA GSFC, Code 900.1 Greenbelt, MD 20771 USA Phone: 301 286 0880 Fax: 301 286 0574 Email: gsolyar@pop900.gsfc.nasa.gov URL: none Research Interests: not available Biography: Mr. Gregory Solyar received a B.S. in radiometrology from Odessa Measuring College of Standards Committee, USSR in 1981; a M.S. in electrical engineering from Odessa State Polytechnic Institute in 1986; and a M.S. in electrical and computer engineering from the Johns Hopkins University in 1998, where his major interest was in nonlinear optics and quantum electronics. He is currently working toward a Ph.D. degree in the Department of Computer Science and Electrical Engineering at UMBC, where his research interest is in imaging methods and algorithms. In December 2000 he joined USRA CESDIS, and became an associate research scientist at GEST in June 2000. Mr. Solyar has over 15 years of experience working in industry and research institutions. During his professional career as a group leader at Central Communications Design Bureau he designed metrology, algorithms, and microprocessor-embedded hardware and software for control and measurement equipment for lines of communications from 1986 to 1990. From 1997 to 1999 he designed and experimented with optical parametric oscillators, passive Q-switched lasers, and laser diodes at the Johns Hopkins University. At the National Institutes of Health he researched special surface effects in photomultiplier tubes, and designed, implemented, and tested systems with fast, small detectors for small fluorescent power emission from 1997 to 1998. As a scientist at GEST he specializes in wave-front sensing methods, techniques, and algorithms, including phase diversity and interferometry.