'"A team of student designers and engineers from the RCA and Imperial
College have designed an open-source alternative to GPS, called
Aweigh, that does not rely on satellites," reports the design magazine
Dezeen.

It's similar to the sextant, calculating positions by measuring the
angular distances between the horizon and the sun.'

-- source: https://news.slashdot.org/story/19/04/27/1813237

Cheers, Peter
--
Peter Reutemann
Dept. of Computer Science
University of Waikato, NZ
+64 (7) 858-5174
http://www.cms.waikato.ac.nz/~fracpete/
http://www.data-mining.co.nz/