In 1977 or thereabouts a collection of scientists huddled around a secret radio receiver in the US desert. This was the start of GPS, Glonass, Gallileo and the whole navigation industry. A GPS chipset now costs, in bulk, a few dollars so your watch, your phone, your computer all have GPS receivers and everyone knows where they are all the time. But how does this technology work? And are there situations when it does not work?

A lecture by Richard Harvey

The transcript and downloadable versions of the lecture are available from the Gresham College website:

https://www.gresham.ac.uk/lectures-and-events/gps

Gresham College has been giving free public lectures since 1597. This tradition continues today with all of our five or so public lectures a week being made available for free download from our website. There are currently over 2,000 lectures free to access or download from the website.

Website: http://www.gresham.ac.uk

Twitter: http://twitter.com/GreshamCollege

Facebook: https://www.facebook.com/greshamcollege

Instagram: http://www.instagram.com/greshamcollege