My presentation on Wednesday, October 30th is based on the article “Global Positioning System: The Mathematics of GPS Receivers” written by Richard B. Thompson found in *Mathematics Magazine*.

We will discuss the following three questions:

- How does a GPS receiver use satellite information to determine our position?
- Why does the determined position change with each computation, even though we may not be moving?
- What is done to improve the accuracy of these varying positions?

We will discuss a variable called clock error and how GPS receivers calculate our coordinates using algebra.

I have listed a video below that provides a very basic and brief introduction to the GPS coordinate system.

-Zachary Lundy

Great presentation. The theory, the mathematics and the applications made the presentation a well above above average. You didn’t need a GPS to locate the great examples and key points that made this talk superior. Great job!