In episode 9 of Pro Running News we discuss the topic of GPS and answer the questions: How are marathon courses measured? How are marathon courses run?
How does GPS work?
Show Notes:
Dissecting GNSS systems
https://blog.bliley.com/the-differences-between-the-5-gnss-satellite-network-constellations
https://www.gps-repeaters.com/blog/gnss-vs-gps-whats-the-difference/
Comparing GPS to Other GNSS
https://www.educba.com/gnss-vs-gps/
Why GPS is sometimes inaccurate
https://www.gps-repeaters.com/blog/four-reasons-why-gps-is-sometimes-inaccurate/
Info on the GPS system
https://www.gps.gov/systems/gps/performance/accuracy/
DC Rainmaker Breakdown of Marathon Course Errors
https://www.dcrainmaker.com/2009/03/racing-line-understanding-how-courses.html
Breakdown of Marathon Course Measurement
https://www.justrunlah.com/2014/08/10/how-are-long-distance-race-courses-and-marathons-measured/
