Electrical and Computer Engineering Seminar Series

Global Navigation Satellite Systems: Where have we come from? Where are we going?


Professor Michael Braasch


Visiting Erskine Fellow

Time & Place

Fri, 11 Aug 2017 14:00:00 NZST in E14, Engineering Core


In the nearly 60 years since the launch of Sputnik, satellite-based navigation has gone from a concept to a ubiquitous utility. This presentation will briefly highlight key points in the history of GPS and then will describe the analog and digital signal processing functions that are at the heart of all satnav receivers. Socalled ‘modernization’ efforts over the past 20 years have sought to improve on the achievements of the legacy system. These efforts that include new signal frequencies and modulations will be discussed. Russia, China, India and the European Union are all at various stages in the development of their own independent navigation satellite constellations and these systems will also be presented. We will conclude by considering the current research and operational issues surrounding the plethora of available navigation systems and signals.


Thomas Professor of Engineering, School of Electrical Engineering and Computer Science, Ohio University, USA.
Principal Investigator, Avionics Engineering Center, Ohio University.