Aust. Geology/Tribolite Solutions

Prospecting Australia

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Katie McRobert, general manager at the Australia Farm Institute, said Australian farmers sourced their GPS signal from one satellite, which was a critical risk to rural industries.

“Having all your GPS eggs in one basket is a vulnerability on a good day, and a fatal weakness on a bad one,” McRobert said.
I can't imagine how that could possibly work - as I understand it, you need at least three satellites to triangulate a reliable position and the more you can access, the more accurate the system becomes. Perhaps she means one constallation. ie. either the US GPS system, EU's Galileo, Russian GLONASS, Chinese BeiDou, Indian IRNSS or Japanese QZSS.
I can't imagine how that could possibly work
Mmm, it does seem strange.

My cousin has the 2cm guidance stuff on our old farm and they calibrate the exact position of 3 base stations and then everything works off them - not working live off an actual satellite in the sky. I assumed that is how all 2cm guidance stuff worked on farms as I thought 2cm accuracy would be impossible from a satellite/s??

The Pivotel network recently died as apparently that runs off just the 1 satellite that sits over Asia/Australia. Satellite 1 died a few years ago, satellite 2 was decommissioned and they were currently using satellite 3 with plans for satellite 4 next year. Unfortunately sat 3 had a fatal error on board that can't be fixed. Whole system is down. Anyone feel free to correct any of that as I was told second hand ;)

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