UW-Milwaukee Department of Mathematical Sciences presents

Dr. Justin Jacobs
Principal Research Statistician
Sandia National Laboratories

Tuesday, April 19, 2016
12:45pm in EMS E495

*Refreshments will be served at 1:30pm in EMS E424A*

Title:
Mathematics of Geolocation Using Nonstandard Signals

Description/Abstract:
The crux of the Geospatial Positioning System (GPS) rests at the satellites’ timing infrastructure and the ability for a receiver to obtain its timing signal. What happens if GPS is no longer accessible to the end user? In this talk, we provide mathematical details into how to do position, navigation and timing (PNT) based on a model representation of the Earth by using methods such as cross-correlation (and other techniques) on non-GPS signals. The calculus of the Earth model must be taken into account as we must be able to identify hyperbolas, circles and other various geometric shapes on the non-Euclidean surface of the Earth. Furthermore, we will derive confidence sets for these geolocations. We will also walk through an example of finding a cell phone user in distress; who is unable to provide geolocation coordinates to authorities.

Dr. Jacobs, a 2005 UW-Milwaukee graduate, is a Principal Research Statistician at Sandia National Laboratories. Dr. Jacobs is a former Applied Research Mathematician of the Department of Defense; where he received the Office of Director of National Intelligence (ODNI) Intelligence Community Seal Medallion in 2014 and the Presidential Early Career Award in Science and Engineering (PECASE) from President Obama in 2014 – both awarded for his work in shape-space analysis, geospatial analysis, and spatio-temporal statistics.

Approximate length of the talk will be 45 minutes. The talk will be followed by a Q&A session about employment, research, or any other interesting tidbits.