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B
Committee Member Biographies
ROBERT E. DEEMER, Chair, has 29 years of industry ex- bps/Hz; he developed predistortion algorithms for two-hop
perience in the fields of spacecraft systems design, simula- communications links. He also developed a bandwidth-effi-
tion modeling, virtual prototyping, network design, opera- cient coded 8PSK modulation technique utilizing
tions and project management, systems engineering, predistortion that achieves a bandwidth efficiency of 2 bps/
spacecraft communications, and executive management. He Hz in a highly distorted nonlinear multi-hop communica-
has master’s degrees in computer science, management sci- tions channel as well as a ROM-based decoding technique
ence, business administration, project management, and the for triple-error correcting BCH codes. He also system-engi-
humanities from California State University, Northridge, neered an end-to-end very-high-data-rate satellite communi-
Colorado Technical College, Pepperdine University, cations system that included all components from the space-
Villanova University, and Redlands University. He also has craft modulator to the ground data demultiplexer output and
undergraduate degrees in engineering, software design, eco- defined all specifications, performed all analysis, integrated
nomics, philosophy, and English literature. Mr. Deemer is units on the spacecraft and in the ground station, and verified
attending the University of Colorado, working toward a doc- end-to-end performance after deployment. He is a member
torate in philosophy and advanced technology. Currently, of ITU-R Study Group 3 (Radiowave Propagation), Work-
Mr. Deemer is a graduate professor for Regis University, ing Party 3J (Propagation Fundamentals), and Working Party
teaching classes in operations, advanced technologies, tech- 3M (Point-to-point and Earth-space Propagation). He has
nical management, and project management. Prior to teach- been awarded nine patents and is the co-recipient of the 2004
ing, he was vice president of technology for Catalina Re- NGST President’s Award for Innovation for “Simulation of
search and worked for 23 years for Lockheed Martin Weather Conditions and Their Impact on Satellite Data
Astronautics and Litton Industries as a design and systems Transmission” and the co-recipient of the 1999 TRW
engineer and as the manager of the Spacecraft Technology Chairman’s Award for Innovation for “Gigabit-Per-Second
Center. He has served on two other NRC study groups in the Bandwidth Efficient Modulation.”
capacity of chair and committee member.
THOMAS C. BETTERTON, a retired rear admiral in the
HARVEY BERGER is a technical fellow for Data Links at United States Navy, is currently a visiting professor for space
Northrop Grumman Space Technology. He received a B.S. technology at the Naval Postgraduate School and has been
in electrical engineering and an M.S. in information and al- retained as a management and technical consultant by a num-
gebraic coding theory from Cornell University. He has 35 ber of aerospace-related corporations. He holds a master’s
years’ experience as a communication systems engineer in degree and an engineer’s degree from the Massachusetts In-
the areas of bandwidth efficient modulation, error correction stitute of Technology. As a naval aviator and designated ac-
coding, RF propagation, and RF and optical link design. He quisition professional, he served as a major program man-
is currently supporting the NPOESS program in the design ager and the senior Navy official, Director Program C, in the
of its L-band, X-band, and Ka-band communications links. National Reconnaissance Office for over 16 years. He has
Previously he was a payload architect for the Astrolink satel- participated in several study efforts for the Defense Science
lite program, and he definitized architectures for future ad- Board and the Air Force Scientific Advisory Board and was
vanced high-data-rate one- and two-hop satellite communi- a member of the NASA Advisory Committee for the Inter-
cation systems that realize bandwidth efficiencies of 3 to 5 national Space Station. He is a fellow of the American Insti-
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80 REVIEW OF THE SPACE COMMUNICATIONS PROGRAM
tute of Aeronautics and Astronautics. Admiral Betterton re- Boeing Satellite Systems) in El Segundo, California. He is
tired from active duty in January 1992. currently managing an internal research and development
(IRAD) project focusing on critical technologies and capa-
ANTONIO L. ELIAS is executive vice president and gen- bilities for NASA’s long-term Communication and Naviga-
eral manager for advanced programs at Orbital Sciences tion System Architecture. Dr. Jarett has a technical back-
Corporation. Previously, he served as Orbital’s chief techni- ground in information theory and communication theory. He
cal officer from 1996 to 1997, corporate senior vice presi- recently designed portions of the communication system for
dent from 1992 to 1996, and first vice president for engi- TSAT, the Defense Department’s Transformational Satellite
neering from 1989 to 1992. From 1987 to 1997, he led the program. TSAT will provide a common high-bandwidth
technical team that designed and built the Pagasus air- space-based communication backbone available to all DOD
launched booster, flying as a launch vehicle operator on the systems. Starting in 1999, Dr. Jarett led Boeing’s design ef-
carrier aircraft for the rocket’s first and fourth flights. He fort for a proposed satellite system to deliver Internet service
also led the design teams of Orbital’s APEX and Sea Star to vehicles, including a novel Ka-band payload architecture
satellites and the X-34 hypersonic research vehicle. Dr. Elias using beam-hopping switch networks. In 2002 he worked
came to Orbital from the Massachusetts Institute of Tech- extensively on a satellite system design for the FAA’s Air
nology (MIT), where he held various teaching and research Traffic Management, and in a related effort he established
positions, including the Boeing Chair in the Department of the feasibility of ad hoc data networking of aircraft over the
Aeronautics and Astronautics. A member of the National Atlantic Ocean using VHF radios. He has also worked on
Academy of Engineering (NAE) and a fellow of the Ameri- advanced beam-forming antenna concepts, including
can Institute of Aeronautics and Astronautics (AIAA), his ground-based beam forming.
awards include the 1991 AIAA Engineer of the Year, the Prior to rejoining Boeing in 1999, Dr. Jarett spent 12 years
AIAA Aircraft Design Award, and the American Astronau- at TCSI, helping it grow from 3 to over 300 employees. He
tical Society (AAS) Brouwer Award. He is also a co-recipi- led systems engineering projects ranging from a smartcard
ent of the National Medal of Technology and the National system for MasterCard to a digital cellular personal base sta-
Air and Space Museum Trophy. tion for AT&T Wireless (then McCaw). He jointly
architected large software systems for UPS (package trac-
CHARLES T. FORCE has a 42-year professional career ing) and FedEx (airplane/truck scheduling and weight and
spanning both government and industry. He served almost balance). Dr. Jarett began his engineering career at Boeing
30 years with what is now NASA’s space communications (then Hughes Aircraft Company) as a Howard Hughes Doc-
program, beginning as an overseas station director and retir- toral Fellow. He received his M.S. and Ph.D. in electrical
ing as an associate administrator. As associate administrator engineering from Stanford University and his B.S. in electri-
for Space Operations (later renamed Space Communica- cal engineering from Cornell University. In the early 1980s,
tions), he provided capabilities to meet the rapidly increas- Dr. Jarett worked extensively on the Space Shuttle’s Ku-
ing communications and information needs essential to all band Communications System, and he designed deep-space
NASA programs, doing so within a flat budget by continu- communication links for a proposed Galileo probe carrier
ally capitalizing on technology. He has testified before Con- spacecraft. Dr. Jarett holds 14 U.S. patents, with several more
gress on both policy and program matters. His responsibili- pending. He is a licensed professional engineer in the state
ties included planning, procuring, launching, and operating of California.
the Tracking and Data Relay Satellite System (TDRSS),
which provides communications with the Space Shuttle as MARJORY JOHNSON was a senior scientist at the Re-
well as with most of NASA’s low-Earth-orbiting (LEO) sci- search Institute for Advanced Computer Science (RIACS) at
entific satellites. He was also responsible for the Deep Space NASA Ames Research Center for almost 21 years. During
Network, ground communications networks, unmanned sat- that time she contributed to several networking research
ellite control centers, and orbital tracking facilities. He has projects, including development of the data network system
represented NASA in national and international radio regu- for the Space Station, development and analysis of the FDDI
latory processes, and actively participated in the 1992 protocol, and analysis of space data-communications proto-
WARC that obtained allocations for the LEO satellites. Mr. cols in support of the international Consultative Committee
Force has also served as president of Vtex International, for Space Data Systems (CCSDS) organization, and she was
deputy program manager at Computer Sciences Technology involved with the Bay Area Gigabit Network Testbed as part
Associates, and co-founder and vice president of Space Data of the next-generation Internet initiative. In 1998 Dr. Johnson
Corporation. He received a BSAE from Purdue University joined the NREN (NASA Research and Education Network)
in 1957. project and became associate manager in 2000, a position
she held until she retired in 2004. During her tenure, the
KEITH JARETT is an associate technical fellow with NREN project conducted research to enable the infusion of
Boeing Space and Intelligence Systems (formerly known as emerging network technologies into NASA mission applica-
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APPENDIX B
tions, thereby enabling new methodologies for achieving headquarters for DOD Shuttle operations, assistant for space
NASA science, engineering, and education objectives. The policy in the Office of the Secretary of Defense, and special
NREN testbed (which included both ground and satellite assistant to the secretary of the Air Force for advanced tech-
components) paired with high-performance testbeds spon- nology insertion. In addition to the positions held within the
sored by other federal agencies and with the university-led government, Mr. Maultsby has filled a range of positions in
Internet2 testbed to provide a nationwide platform for con- the commercial aerospace industry. These included Director
ducting network research and for prototyping and demon- of Advanced Concepts at MacDonnell Douglas Electronics
strating revolutionary applications. Dr. Johnson worked Systems Company, Senior Vice President and Director of
closely with representatives of other federal agencies to co- the Decisions Technology Division of GRC International,
ordinate networking research activities across the agencies. and founder and President of Rubicon LLC, a specialized
She has participated in several review panels, both to review aerospace consulting firm. Mr. Maultsby has also served on
projects within NASA and to review activities of other fed- numerous independent review committees and has held a
eral agencies. Dr. Johnson received a Ph.D. from the Univer- variety of additional related positions. From 1998 to 1999,
sity of Iowa and taught mathematics at the University of he was a member of the Defense Science Board Task Force
South Carolina and computer science at the University of on Space Superiority. From 1992 to 1995, he served on the
Missouri-St. Louis prior to joining RIACS. Board of Directors (and as chair in 1994) of the Security
Affairs Support Association.
YOGI Y. KRIKORIAN is manager, System Design and
Simulation Section, at the Aerospace Corporation. He has TODD J. MOSHER is the director of Advanced Systems at
17 years’ experience in communications engineering, includ- Microsat Systems Inc., a company that specializes in small
ing 5 years in commercial industry including Hughes Space satellites. Dr. Mosher joined MSI after serving as senior
and Communication Company. He has been active in sev- manager of Advanced Exploration Systems for Lockheed
eral NASA/JPL projects. He provided communication dy- Martin Space Systems Company, where he was a part of the
namic link analysis for the Mars Rovers, Spirit and Opportu- group that recently was awarded the Orion Crew Explora-
nity, and the Mars Telecommunications Orbiter; Mars Scout tion Vehicle from NASA. At Lockheed Martin, Dr. Mosher
evaluations, including the Phoenix mission; and New Fron- served as the principal investigator for an internal research
tiers proposal evaluations. While at Hughes, Mr. Krikorian and development project in autonomous rendezvous and
worked as a payload system engineer on the ICO Global docking, a critical technology for space exploration missions.
Communication Satellite program. He helped design and Prior to working at Lockheed Martin, Dr. Mosher was an
develop the LO distribution network, communication pro- assistant professor at Utah State University (USU) where he
cessors, payload control processor (PCP), payload layout, was the director of the Center for Advanced Satellite Manu-
and gain distribution of IF, RF, and LO signals. Mr. facturing, a state-sponsored center of excellence. While at
Krikorian also served as the manager of applications engi- USU, his research was sponsored by the Air Force Research
neering at Elanix, Inc. in Westlake Village, California, where Laboratory, the Office of Naval Research, the National Re-
he provided technical expertise and support on the connaissance Office, the Air Force Office of Scientific Re-
SystemView, a PC-based software simulation for designing search, Lockheed Martin, The Aerospace Corporation, and
DSP algorithms, communications systems, and RF/analog the Space Dynamics Laboratory. He also served as the pro-
systems. Other commercial experience includes serving as gram chair for the annual American Institute of Aeronautics
senior technical engineer and director of engineering at RJS, and Astronautics (AIAA)/USU Conference on Small Satel-
Inc. in Santa Fe Springs, California. Mr. Krikorian rejoined lites, which celebrated its 20th anniversary in August 2006.
the Aerospace Corporation in August 2000 after spending 8 Prior to serving at Utah State University, Dr. Mosher
years at Aerospace (1987-1995), during which he earned his was the associate director of the Space Architecture Depart-
master’s degree in electrical engineering from the California ment at the Aerospace Corporation, was an instructor at the
Institute of Technology. In addition to participating in sev- University of California Los Angeles, and worked at Gen-
eral NASA projects, Mr. Krikorian also analyzed, simulated, eral Dynamics Space Systems on a variety of launch systems
and presented information on the susceptibility of the ICO ranging from future concepts to the contemporary Space
commercial satellite to pulsed radar frequency Interference Shuttle and Atlas. Dr. Mosher earned his Ph.D. in aerospace
for GMSK and QPSK modems. engineering from the University of Colorado, has two
master’s degrees in aerospace engineering and systems engi-
THOMAS MAULTSBY retired from the U.S. Air Force in neering from the University of Colorado and the University
1989 with the rank of lt. colonel. His Air Force assignments of Alabama in Huntsville, respectively, and received his
spanned satellite design, production, testing, launch opera- bachelor’s degree in aerospace engineering from San Diego
tions, satellite ground systems acquisition, and program man- State University. Dr. Mosher previously served the National
agement. His specific positions within the government in- Research Council as chair of the NASA Communications
cluded senior Air Force representative to NASA and Navigation Capability Committee in 2005 and as a mem-
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82 REVIEW OF THE SPACE COMMUNICATIONS PROGRAM
ber of the Committee for the Review of NASA’s Pioneering Steffes’ honors include the Metro Atlanta Young Engineer
Revolutionary Technology Program and its supporting Panel of the Year Award, presented by the Society of Professional
on Enabling Concepts and Technologies from 2001 to 2003. Engineers (1985); the Sigma Xi Young Faculty Research
Additional distinctions include two patents pending in small Award (1988); elected membership to the Electomagnetics
satellite design, nearly 50 professional publications, serving Academy (1990); the Sigma Xi Best Faculty Paper Award
as the current chair of the AIAA Space Systems Technical (1991); NASA Group Achievement Award for the High
Committee, and being named an Associate Fellow of the Resolution Microwave Survey Project, for which he was a
AIAA in 2004. He has received several awards from NASA principal investigator (1993); and the Institute of Electrical
and the AIAA for his work mentoring students. and Electronics Engineers Judith A. Resnik Award (1996).
He was named a fellow of the IEEE in 2004. He has served
PATRICK A. STADTER is a principal professional staff on two other NRC study groups, and he chaired the Commit-
engineer at the Johns Hopkins University Applied Physics tee on Radio Frequencies (BPA/CORF) from 1998 to 2001.
Laboratory, where he serves as an assistant supervisor for He was named a lifetime national associate of the National
military systems in the Space Systems Applications Group. Academies in 2001.
Dr. Stadter earned a B.S.E.E. from the University of Notre
Dame (1991), an M.S.E.E. from the Johns Hopkins Univer- MICHAEL W. TOMPKINS is a senior project engineer
sity (1993), and a Ph.D. in electrical engineering from Penn- with KDM Systems, Incorporated, a firm specializing in
sylvania State University (1997). Dr. Stadter was the princi- technical consulting to the National Reconnaissance Office.
pal investigator of the NASA Explorer’s program to develop He is a member of a team that spans multiple program of-
the cross-link transceiver for interspacecraft communications fices and focuses on demonstrating and fielding advanced
and navigation among multiple spacecraft, and the PI of the satellite payloads. He earned a B.S.E.E. from the University
NASA-funded distributed spacecraft modeling and simula- of Texas at Austin in 1993 and M.S. and Ph.D. degrees in
tion testbed. He currently leads several Department of De- electrical engineering from the University of Illinois at Ur-
fense research programs for small spacecraft applications. bana-Champaign in 1995 and 1997, respectively. Prior to
Dr. Stadter’s research includes distributed command and joining KDM Systems in 2006, Dr. Tompkins was an engi-
control methods for autonomous vehicles, integrated navi- neering specialist for the Aerospace Corporation (1997 to
gation and communication systems, and information-theo- 2003) and an assistant professor of electrical and computer
retic classification techniques. Dr. Stadter has numerous engineering at Utah State University (2003 to 2005). He has
technical publications and holds two patents related to com- led or participated in a wide range of research and develop-
munication and navigation systems. ment activities that combine the disciplines of electro-
magnetics, microwave electronics, digital signal process-
PAUL G. STEFFES received his Ph.D. in electrical engi- ing, and communications theory.
neering from Stanford University, and his primary research
area is microwave and millimeter-wave remote sensing of WILBUR TRAFTON is president of Will Trafton & Associ-
planetary atmospheres, microwave and millimeter-wave sat- ates, an aerospace consulting firm. Previously he was presi-
ellite communications systems, radio and radar astronomy dent and chief operating officer of Kistler Aerospace Corpo-
systems and techniques, radio science, and non-invasive ration. Prior to joining Kistler, Mr. Trafton was vice
monitoring of glucose levels in the human body. He worked president/general manager of Boeing Expendable Launch
as a graduate research assistant at the Massachusetts Insti- Systems and president of Boeing Launch Services. He served
tute of Technology’s Research Laboratory of Electronics, as chairman of the board and president of Sea Launch Com-
Radio Astronomy, and Remote Sensing Group while pursu- pany, LLC. He was also president of International Launch
ing his master’s degree (1976-1977). From 1977 to 1982, he Services. Mr. Trafton is a former associate administrator for
was a member of the technical staff at Watkins-Johnson spaceflight at NASA headquarters in Washington, D.C.,
Company Sensor Development in San Jose. He was a gradu- where he was responsible for planning, budgeting, and ex-
ate research assistant at Stanford University’s Center for ecution of the Space Shuttle program, the International Space
Radar Astronomy while pursuing his Ph.D. (1979-1982). Dr. Station program, the Expendable Launch Vehicles program,
Steffes has worked at the Georgia Institute of Technology and the Deep Space Network. He was also responsible for
since 1982, as assistant professor (1982-1988), associate pro- four NASA centers: Johnson Space Center in Houston,
fessor (1988-1994), professor (1994-present), and associate Texas; Kennedy Space Center, in Florida; Marshall Space
chair (2004-present). He has been involved with several Flight Center in Huntsville, Alabama; and Stennis Space
space missions, including Pioneer-Venus, Magellan, the Center in Mississippi. In 1997 Mr. Trafton was selected for
Advanced Communications Technology Satellite, Cassini, the Presidential Rank of Meritorious Executive. He was also
and Juno. He was a member of NASA’s SETI Microwave awarded two NASA Outstanding Leadership medals.
Observing Team and was involved with the Project Phoenix Mr. Trafton retired from the United States Navy as a cap-
microwave search conducted by the SETI Institute. Dr. tain after 26 years of service. He is a decorated combat vet-
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APPENDIX B
eran, having flown 85 combat missions from the aircraft car- tions, including buyer, procuring contracting officer, pro-
rier Shangri-la in the Vietnam War. He also served as com- gram control chief of plans and advanced requirements,
manding officer of the fast combat support ship Seattle in project engineer, program manager, and system program di-
Desert Storm. He was awarded the Bronze Star for his duty rector. Mr. Zilin now consults for industry and government
in Desert Storm. He held a number of high-level positions in agencies, providing support for strategic planning; in depth
the areas of operations, acquisition of weapons systems, and research, studies, and analyses; program execution and man-
international affairs, including commanding officer of At- agement; systems engineering and analysis; business pro-
tack Squadron 113 and executive officer of the aircraft car- cess reengineering; and proposal planning, preparation, and
rier Forrestal. He has over 3000 flight hours and 700 carrier review. He has supported industry on U.S. and European
landings. space launch programs; ISR, communications, and experi-
A graduate of the U.S. Naval Academy, he received a mental space vehicle programs; launch range upgrade, sus-
master’s degree in operations research and systems analysis tainment, and O&M programs; attack, strike fighter, and
from the U.S. Naval Postgraduate School in Monterey, Cali- training aircraft programs; and restricted programs. He has
fornia. He is also a graduate of the Defense Systems Man- participated on launch accident review boards. He has been
agement College in Ft. Belvoir, Virginia. an ad hoc member of the Air Force Scientific Advisory
Board; an advisor to the Air Force PEO (Space), the Air
BARRY M. ZILIN is the president and CEO of Practical Force vice chief of staff, and the commanders of the Air
Innovations International, a small business corporation that Force Materiel Command and Air Force Space Command;
focuses on the key disciplines required to perform research, and a consultant to the DARPA director. Mr. Zilin earned a
development, test, evaluation, production, operation, and B.S. in aerospace engineering from the Polytechnic Insti-
maintenance of aerospace systems. Mr. Zilin retired from tute of Brooklyn in 1968, and an M.S. in aerospace engi-
the Air Force in 1989 after 20 years of distinguished service neering from the University of Arizona in 1972. He holds a
during which he held a variety of system acquisition posi- top-secret SCI clearance.
