Crosslink Spring 2010 Contributors



What GPS Might Have Been—and Could Become

John Clark, John Langer, Thomas PowellJohn E. Clark (left), Principal Director, Space Systems, Navigation Division. His directorate oversees the design, development, assembly, test, and launch of Global Positioning System (GPS) satellites. Clark joined Aerospace as a member of the technical staff in 1979, working in the Energy Conservation Directorate in Government Support Operations. While there, he reviewed the development of advanced automotive engine technologies for the U.S. Department of Energy and the U.S Army tank-automotive command. In 1985, he joined the GPS program office, System Engineering Directorate. Since then, he has worked on a series of assignments ranging from development of new sensors for the Nuclear Detonation Detection System to sustainment planning and architecture studies to support the ongoing capability upgrades to GPS. Clark received his bachelor’s degree in physics and his master’s in general engineering from UCLA.

John V. Langer (center), Principal Director for GPS User Systems, Navigation Division, is responsible for the success of the military user equipment efforts of the GPS Wing, including the development of the next generation of modernized GPS equipment as well as ensuring availability and robustness of current capabilities. Prior to his position in the GPS user segment, he was the chief engineer for the GPS III program. In addition to previous Crosslink contributions, he has written technical papers on integrity improvements for the GPS control segment. He joined Aerospace in 1987 and has a master’s degree in mathematics from the University of Washington, Seattle.

Thomas D. Powell (right), Systems Director, Navigation Division, first joined Aerospace in 1987, and then returned after graduate school in 1995, where he worked in the Satellite Navigation Department within the Engineering and Technology Group. He transferred to the Navigation Division in 2000. Powell has supported the GPS Wing on next-generation military handheld GPS receivers, has provided technical expertise to the Office of the Undersecretary of the Air Force in Washington, D.C., and currently supports GPS systems engineering. Powell has a Ph.D. in aerospace engineering from UCLA.



DMSP Instruments: A 50-Year Legacy

Donald Boucher Jr and Anthony StierDonald J. Boucher Jr. (right), Principal Engineer/Scientist, Meteorological Satellite Systems, joined Aerospace in May 1976 working in the Space Sciences Laboratory, where he assisted in the development of scientific analysis software. He joined the Defense Meteorological Satellite Program office in 1983 working to develop and field the Satellite Data Handling System at the Air Force Weather Agency. Boucher has served as section manager and systems director in the Sensors Directorate, where he worked on microwave instruments and scientific ground processing software. He has bachelor’s and master’s degrees in meteorology from UCLA.

Anthony T. Stier, Associate Member of the Technical Staff, Advanced Environmental Applications, Meteorological Satellite Systems, joined Aerospace in 2003 and has supported the Defense Meteorological Satellite Program office in the areas of remote sensing and data exploitation. He has a bachelor’s degree in geography and environmental studies from UCLA.



Military Satellite Communications: Then and Now

Michael Rccio and Maurice KingMichael J. Riccio (left), Systems Director, System Requirements and Architecture, Navigation Division, is responsible for GPS system requirements, architecture, and integration and testing. Prior to this, Riccio worked in the MILSATCOM Division, most recently as associate systems director for the TSAT space segment. Riccio has taught a systems engineering course at The Aerospace Institute, and has bachelor’s and master’s degrees in electrical engineering. He joined Aerospace in 1987.

Maurice A. (Mak) King, Distinguished Engineer, MILSATCOM Division, has held a variety of managerial and staff positions at Aerospace, including his current honorary position. He has contributed chapters to two books on satellite communications and has published in several journals and for many conference publications. King began his work with Aerospace in 1976 in the area of advanced communication system design and analysis. He received his bachelor’s degree in electrical engineering from Iowa State University, and a master’s in engineering and Ph.D. in communications theory from UCLA.



Launch Vehicles Then and Now: 50 Years of Evolution

Randolph Kendall and Peter PortanovaRandolph L. Kendall (left), General Manager, Launch Systems Division, is responsible for management of Aerospace systems engineering support to the Delta IV and Atlas V programs, as well as Space Launch Operations support to NASA and other civil and commercial programs. He joined Aerospace in 1988 as a member of the technical staff and has supported a variety of spacecraft and launch vehicle programs. Kendall earned bachelor’s and master’s degrees in aerospace engineering from the University of Michigan, and a master’s in business administration from California State University, Long Beach. He is a senior member of AIAA and serves on the Space Transportation Technical Committee.

Peter L. Portanova, Principal Engineer/Scientist, Launch, was the first principal director for EELV, and has been working at Aerospace for more than 47 years. He has held positions of increasing responsibility in the areas of systems engineering, integration, and management. His work assignments have included the Titan III, the space shuttle at Vandenberg Air Force Base, advanced launch vehicle studies, Pentagon work in the Office of the Undersecretary of Defense, and the 1994 Space Launch Modernization Plan. Portanova is currently assigned to the National Reconnaissance Office. He has coauthored many papers on the genesis of EELV. Portanova earned a master’s in engineering from the University of Southern California, and completed work toward a Ph.D. at the Drucker Executive Management School, Claremont Graduate University.



George PaulikasThe Aerospace Laboratories:  50 Years of Science in Support of National Security Space

George Paulikas joined Aerospace in 1961 upon completing his Ph.D. in physics from the University of California, Berkeley. He retired in 1998 from the position of executive vice president. During his years at Aerospace, Paulikas worked as a senior scientist, department head, laboratory director, vice president of laboratories, and as senior vice president of organizations that evolved over the years into today’s National Systems Group and Space Systems Group. Paulikas received the Trustees’ Distinguished Achievement Award in 1981 and the National Reconnaissance Office Gold Medal in 1998. He admits to having failed retirement, and continues to work as a casual employee.



NASA and The Aerospace Corporation

David BeardenDavid A. Bearden, General Manager, NASA and Other Civil Programs, has supported many NASA interplanetary and Earth-science programs. In 2006, he shared The Aerospace Corporation’s President’s Achievement Award for leading the Hubble Space Telescope Servicing Analysis of Alternatives. He was also the recipient of the Aviation Week & Space Technology Annual Aerospace Laurels in 2000. Bearden joined Aerospace in 1991, and has a Ph.D. in aerospace engineering from the University of Southern California.

Roy ChiulliRoy M. Chiulli, Senior Project Engineer, Civil and Commercial Operations, joined Aerospace in 1980. During his 30-year career at Aerospace, he has provided systems engineering support to numerous military, civil, commercial, and international programs. He served as program manager of Aerospace’s support to the Republic of China Satellite (ROCSAT) program. He is also the author of three books and has taught quantitative analysis courses at UCLA, USC, and Cal State Northridge. Chiulli has a bachelor’s degree in mathematics from Rensselaer Polytechnic Institute, a master’s degree in operations research from the University of California at Berkeley, and a Ph.D. in systems engineering from UCLA.



The Early Days of Computing at Aerospace


William ClarksonWilliam K. Clarkson was appointed general manager of the Computer Systems Division, Engineering Technology Group, in October 1996, and retired in the fall of 1997. He was previously principal director in the Software Engineering Subdivision, and prior to that was principal director of the Distributed Computing and Communications Subdivision. From July 1969 to February 1980, Clarkson was director of the Systems Simulation and Analysis Department. He joined Aerospace as a specialist in computer systems and software in December 1960, and earned a bachelor’s degree in electrical engineering from Princeton University and a master’s degree in electrical engineering from the California Institute of Technology. He is a member of Sigma Xi and Tau Beta Pi.

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