Dine and Learn: Using GPS in Space


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The Denver Section would like to invite you to join us for the latest presentation in our Dine and Learn series!

Come join your fellow IEEE members and local engineers for a fun filled evening of appetizers, networking, and dinner, while we discover exciting new innovations in technology. Once a month one of your local Denver IEEE Societies will host the event and bring in a unique speaker related to their field to present. This provides you, our members, with a unique opportunity to explore and learn about exciting new technologies being developed around you. Early on in the evening you’ll also have ample opportunity to mingle with your fellow engineers and colleagues delving into a broad range of technical expertise.

We will provide the appetizers, but dinner is at your own expense. Dinner for students is free.

If there is a specific speaker or topic you find interesting please let us know and we will try to accommodate it in the schedule.

Upcoming presentations:

December: N/A

January: Wide Open! 

  Date and Time




  • 10633 Westminster Blvd
  • #900
  • Westminster, Colorado
  • United States 80020
  • Building: Rock Bottom Brewery
  • Room Number: in the "Promenade Room"
  • Click here for Map

Staticmap?size=250x200&sensor=false&zoom=14&markers=39.8882762%2c 105
  • Co-sponsored by Lanbing Shan
  • Registration closed


Penina Axelrad


Using GPS in Space

With GPS capability embedded in every smart phone in our pockets, everyone has personal experience with its effectiveness in guiding us to our destinations, and of course, their own stories of signal losses and lousy directions.  This talk will explore use of GPS at a bit higher altitude – specifically, how GPS is used in orbit from near-Earth LEO orbits to GEO and beyond.

 We’ll discuss the benefits, challenges, and approaches for using GPS on small satellites, not only for positioning, but also for estimating satellite orientation, sensing the Earth’s atmosphere and its surface properties.  We’ll also look at unique aspects of using GPS onboard large platforms like the ISS and how its utility has been extended beyond the GPS constellation altitude.   





Penny Axelrad is Professor of Aerospace Engineering Sciences and a member of the Colorado Center for Astrodynamics Research (CCAR) at CU Boulder.  She has been a member of the faculty since 1992 and served as department chair from 2012-2017.  At CU she teaches courses in GPS, dynamics and systems.  She has supervised 18 PhD graduates, with her current research group comprising 6 PhD students and 3 undergraduates. 


Dr. Axelrad’s research interests include space situational awareness, technology and algorithms for GNSS-based position, navigation, and timing in space, airborne, marine, and land environments, multipath characterization and correction, and remote sensing using GNSS-based reflectometry and radio occultation measurements.  She has authored 54 journal papers, 117 conference papers, and served as PI or Co-I on research grants and contracts totaling $9M.  She is a Fellow of the AIAA and the Institute of Navigation, a senior member of IEEE, and the recipient of the 2015 Women in Aerospace Educator Award. 


6:00 - 6:15 Registration and Appetizers

6:00 - 7:00 Dinner and Networking

7:00 - 8:30 Presentation

IEEE ---- Denver Section