Israel Greenfeld is a member of the Communication System Integration Branch of the Communications Division at the National Aeronautics and Space Administration's Glenn Research Center at Lewis Field in Cleveland, Ohio. Mr. Greenfeld currently serves as lead of the oceanic Communications, Navigation, and Surveillance (CNS) and space-based surveillance subprojects for the Advanced CNS Architectures and System Technologies (ACAST) Project. He has assigned studies to two co-op students to investigate a systems approach to aeronautical communications. He has also developed milestones and budgets, and written statements of work for eventual studies.

Mr Greenfeld earned his bachelor’s of science in physics from Cleveland State University. He began his career in orbital mechanics, including updating existing orbits to account for perturbations and planning new missions. He conducted real-time orbital updates for the first four space shuttle flights. In preparation for those first flights, he developed angle corrections for the 80-ft space tracking and data network antennas that were used by the orbital computing program.

His next position entailed launch vehicle mission planning and trajectory optimization for geostationary Earth orbit communications (Intelsat and Fleetsatcom) and planetary missions (Galileo, Ullyses, and Magellan) employing either the Atlas, Titan, or space shuttle launch systems with Centaur as an upper stage. Mr. Greenfeld then became a project manager in the Space Station Program’s leading data base, networking, and electronic document groups to develop an electronic engineering drawing review system based on the Computer Aided Logistics System (CALS) standards to support Critical Design Review (CDR), while meeting configuration management requirements. This system pioneered the integration and implementation of a number of new technologies, which were reported at conferences of the American Institute of Aeronautics and Astronautics (AIAA) and Institute of Electrical and Electronics Engineers (IEEE). Based on that work, Mr. Greenfeld was asked to conduct an electronic data interchange pilot to test electronic business documents trading between NASA and a vendor employing a value-added network.

Mr. Greenfeld then engaged in systems and architecture studies, especially in support of the Earth Science Enterprise. This included a 3-year study with the Massachusetts Institute of Technology and Draper Laboratory to develop an autonomous satellite scheme for reassigning "targets" based on either changing weather conditions or unanticipated events such as volcanic eruptions.

Mr. Greenfeld has mentored high school and university students in the Summer High School Apprenticeship Research Program (SHARP), Lewis' Educational and Research Collaborative Internship Program (LERCIP), and co-op programs. He is also the engineering training committee representative for the Communications Systems Research Branch.