2011 Burka Award

Presented to: Dr. Penina Axelrad, Ben K. Bradley, James Donna, Megan Mitchell, and Dr. Shan Mohiuddin

Citation: For their paper "Collective Detection and Direct Positioning Using Multiple GNSS Satellites" published in the Winter issue of NAVIGATION, Journal of The Institute of Navigation, Vol. 58, No. 4, pp. 305-321.

Dr. Penina Axelrad

Dr. Penina Axelrad is a professor of Aerospace Engineering Sciences at the University of Colorado Boulder where she has been educating undergraduate and graduate students for the past 19 years. Her research interest include: Global Navigation Satellite Systems (GNSS) technology and applications for satellite orbit and attitude determination, GNSS surface reflections and atmospheric occultations, multipath characterization and mitigation, orbital dynamics and spacecraft rendezvous. She has been involved in GPS research and development since 1985. She is the recipient of the ION 2009 Kepler Award, a Fellow of ION and the AIAA. She received a Ph.D. in Aeronautics and Astronautics from Stanford University and a S.B. and S.M. from the MIT.

Ben Bradley

Ben K. Bradley is a graduate student at the University of Colorado at Boulder and currently funded by the National Defense Science and Engineering Graduate Fellowship. His previous graduate work includes weak signal GPS positioning strategies and precise orbit propagation. Ben is now focused on studying fast numerical integration techniques in an effort to improve space situational awareness.

James Donna

James Donna is a distinguished member of the technical staff at the Charles Stark Draper Laboratory where he has worked since 1980. His interests include GNSS navigation in weak-signal environments and integrated inertial-GNSS navigation.


Megan Mitchell

Megan Mitchell is a senior member of the technical staff at the Charles Stark Draper Laboratory. She has worked on GPS and navigation algorithms for various difficult signal environments, and is currently leading a team developing non-Gaussian error estimation algorithms for multi-sensor systems. She received a B.S. in Aerospace Engineering from the University of Texas at Austin, and a M.S. in Aeronautics & Astronautics from MIT.


Dr. Shan Mohiuddin is a senior member of the technical staff at the Charles Stark Draper Laboratory. His research interests include GNSS technology, estimation theory, and navigation algorithms. He holds a B.S. in Aerospace Engineering from Virginia Tech and an M.S. and Ph.D. in Aerospace Engineering from Cornell University.