Formation RF Sensors
Task Manager
Jeff Tien
Jeffrey Tien received his M.S. degree in Electrical Engineering
from USC in 1993. He joined the GPS systems group at JPL in 1989
where he worked on hardware design of flight GPS receivers for various
space missions. He has served as the Instrument Lead Engineer for
the Autonomous Formation Flying sensor on the StarLight Mission for
the last two years. His research interest includes high speed signal
processing and formation flying sensor technology development.
Team Members
Dr. George Purcell (Formation Flying Sensor Architecture, System
Design, & Analysis)
Dr. George Purcell has been a member of the Technical Staff at the
Jet Propulsion Laboratory since 1975. His research interests and
experience include radio interferometry and its geodetic applications,
GPS applications, experimental design, and data analysis. Since 1998
he has been working on the development of formation flying technology
for StarLight and its predecessors.
Dr. Lawrence Young (Formation Flying Sensor Architecture, System
Design, & Analysis)
Dr. Larry E. Young has developed radiometric technology at Caltech's
Jet Propulsion Laboratory since 1978. Specific areas of his group's
research include digital GPS receivers, multipath mitigation, sub-nanosecond
clock synchronization, and sub-cm formation flying. Larry received
a Ph.D. in Nuclear Physics from SUNY at Stony Brook in 1975, and
a B.A. in Physics from Johns Hopkins in 1970. He has served on several
committees defining future navigation systems, and has been author
or co-author of 30 refereed papers, 51 conference proceedings, 10
NASA tech briefs, and 3 GPS-related patents.
Jeff Srinivasan (Signal Acquisition Algorithm)
Jeffrey Srinivasan is the Technical Group Supervisor of the Advanced
Radio Metric Instrument Development Group at NASA's Jet Propulsion
Laboratory. Mr. Srinivasan's group has developed numerous science-grade
GPS Space Flight Instruments, including the Primary Instrument for
the GRACE mission, as well as the Autonomous Formation Flyer Instrument
for the StarLight and Terrestrial Planet Finder Projects. Mr. Srinivasan
received a Bachelor of Arts degree from Harvard College and a Master
of Science degree in Electrical Engineering from the University of
Southern California.
Tim Rogstad (Software Algorithm)
Tim Rogstad has been with the GPS group at JPL since 1995. He was
the Instrument Processing Unit (IPU) Software CogEE on Grace and
is currently writing the signal processing software for TPF's Formation
Flying Sensor. He has a M.S. degree in Electrical Engineering from
Cal Poly, Pomona.
Jacob Gorelik (Testbed Support)
Jacob Gorelik received his B.S. degree in Electronics and Computer
Engineering Technology from Cal Poly Pomona in 2002. He joined the
GPS systems group at JPL in 2001 where he worked on hardware testing
of GPS receivers and the Autonomous Formation Flying sensor.
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