Todd Humphreys

Todd Humphreys University of Texas

Dr. Todd Humphreys is an Assistant Professor in the Aerospace Engineering and Engineering Mechanics department at The University of Texas at Austin.

Dr. Humphreys specializes in the application of optimal estimation techniques to problems in satellite navigation, orbital and attitude dynamics, and signal processing. He directs the Radionavigation Laboratory at UT Austin, where software-defined GPS receivers are developed as a platform for GPS technology innovation and study of the ionosphere and neutral atmosphere. His recent focus has been on defending against intentional GPS spoofing and jamming. In 2008 he co-founded Coherent Navigation, a startup that hardens GPS by, among other things, exploiting telephony signals from the Iridium satellite constellation.

Research Interests

> Satellite Navigation
> Orbital and attitude dynamics
> Signal processing