4 ms·
Yea we used old L&R ones on the ships. GPS receiver was $60k and we only got 2-3 hours of semi-ok GPS per day, but also recorded speed & heading, used some ear
by pugworthy 5y ago
Yea we used old L&R ones on the ships. GPS receiver was $60k and we only got 2-3 hours of semi-ok GPS per day, but also recorded speed & heading, used some early satnav systems with fixes once in a while, and ranging navigation from custom transmitters on shore. Lots and lots of post processing of the nav to try and use it to correct the gravity data. It was pretty crude.