Technical Focus
The primary emphasis is on dynamics and control, with a specialization in
estimation problems and Kalman filtering. Applications of primary interest include
GPS/GNSS-based navigation, GPS/GNSS receivers for new signals or unusual environments,
spacecraft orbit determination, and spacecraft attitude determination &
control. Efforts include the development of novel system designs/concepts, the
corresponding problem models, and the associated numerical estimation algorithms.
Some projects involve flight hardware and experiments or campaigns to collect
remote-sensing data. Other projects are based primarily on analysis and simulation.
Virtually all efforts include significant development of custom-designed numerical
analysis algorithms and software.
Professional Honors
- Fellow of the
AIAA, 2017-present
- Fellow
of the Institute of Navigation (ION), 2014-present
- 6 best paper awards at AIAA and AAS international conferences
- ION Burka
Award for best paper in Vol. 52 of Navigation, 2005
- ION
Tycho Brahe Award, 2013
Significant Achievements of Group
- GNSS/GPS spoofing and
detection trials aboard the White Rose of Drachs superyacht
- RAIM-resistant
GPS spoofer
- 2 GPS spoofing detectors, one
tested successfully against live attacks by a RAIM-resistant spoofer
- Galileo
GIOVE-A L1 BOC(1,1) PRN code determination & first publication
- GPS/GNSS software radio receivers for new signals including GPS L2C and Galileo
L1 BOC(1,1)
- New estimation & filtering algorithms including 2 singular filters, a
sigma-points smoother, a new type of Gaussian mixture filter for general nonlinear
problems, and integer estimators
- COrnell
Wire BOom Yo-yo system (COWBOY) with 6 successful rapid boom deployments
on 4 sounding rocket missions
- Attitude determination Kalman filter/smoother for recovery of partially failed
ALEXIS
spacecraft mission
- Weak-signal GPS acquisition algorithms used in NASA's high-altitude Navigator
GPS Receiver
Related links
- White Rose
of Drachs Superyacht GNSS spoofing & detection adventure blog
- Videorecorded
lecture on GNSS spoofing & detection at ENAC in Toulouse, France
- UT/Austin Radionavigation
lab of Ph.D. alumnus & close collaborator Prof. Todd Humphreys
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CU
Engineering College faculty page
Last updated 11 Feb. 2017
