October 20, 2016

About the Seminar

Global Navigation Satellite Systems (GNSS) is a term used to collectively describe satellite-based positioning and timing systems. The Global Positioning System (GPS), operated by the United States Department of Defense, is perhaps the most well-known and widely used GNSS. Currently, it is the sensor of choice for managing air, rail, road, and marine transportation systems worldwide. Its timing function is the “heart beat” for clocks around the globe and supports operations such as the time-stamping of banking transactions and synchronizing the phase of alternating current on distributed power grids. In other words, it has become an indispensable modern utility whose malfunction has unacceptable consequences.

This seminar presented an overview of the current state of GNSS technology and how it is being used to address emerging transportation applications. It also described threats to GNSS robustness that must be addressed before it can be widely used in safety- and liability-critical transportation applications (e.g., driverless cars or small unmanned aircraft systems). The presentation closed with a description of ongoing efforts to devise methods and augmentations for making GNSS robust and thus paving the way for its wide use in intelligent transportation systems.


About the Speaker

Demoz Gebre-Egziabher

Demoz Gebre-Egziabher is an associate professor and director of graduate studies in the Department of Aerospace Engineering and Mechanics at the University of Minnesota. His research focuses on the navigation, guidance, and control of aerospace and ground vehicles. Applications of his work have included the development of attitude determination systems for satellites, high-accuracy navigation of aircraft, and evaluations of the operations of small autonomous aerial vehicle operations in the national airspace system.