[LINK] Ffx: 'Farmers ‘crippled’ ... as GPS-guided tractors grind to a halt'

[Kim Holburn]

I haven't read all this yet but how could this all possibly depend on just one satellite?  One satellite would only be above the 
horizon for half of the time.  How would that even work?

When I look at GNSS satellites ATM I see 80 at any one time.  That includes US GPS, Chinese BDS, Russian Glonass, European Galileo, 
Indian IRNSS/Navic, Japanese QZSS.

On 2023/04/19 3:30 pm, Roger Clarke wrote:
> [ Total reliance, with no fallback of any kind?
> 
> [ No fallback arrangements with another satellite signal provider?
> 
> https://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/gps/howitworks
> https://www.gps.gov/systems/gnss/
> https://www.geospatialworld.net/blogs/what-are-the-various-gnss-systems/
> 
> [ No alternative source of geo-positioning info with, say, +/-3 metre accuracy, despite the variety of techniques that exist?
> 
> [ Not even anything as crass as some physical markers at strategic points in the fields?
> 
> [ So it doesn't need a nuclear holocaust to bring on famine and depopulation, just a collapse in GPS services, e.g. as a result of a 
> proxy-war in orbit? ]
> 
> 
> Farmers ‘crippled’ by satellite failure as GPS-guided tractors grind to a halt
> Mike Foley
> Fairfax
> April 18, 2023 — 5.39pm
> https://www.smh.com.au/national/farmers-crippled-by-satellite-failure-as-gps-guided-tractors-grind-to-a-halt-20230418-p5d1de.html
> 
> Tractors have ground to a halt in paddocks across Australia and New Zealand because of a signal failure in the satellite farmers use 
> to guide their GPS-enabled machinery, stopping them from planting their winter crop.
> 
> The satellite failure on Monday was a bolt from the blue for farmers in NSW and Victoria, who were busy taking advantage of optimal 
> planting conditions for crops including wheat, canola, oats, barley and legumes.
> 
> “You couldn’t have picked a worse time for it,” said Justin Everitt, a grain grower in the Riverina who heads NSW Farmers’ grains 
> committee.
> 
> “Over the past few years, all these challenges have been thrown at us, but this is just one we never thought would come up.”
> 
> Tractors that pull seed-planting machinery, as well as the massive combine harvesters that reap Australia’s vast grain crops, are 
> high-tech beasts that can cost hundreds of thousands of dollars.
> 
>  From ‘moonscape’ to emission offsets: the farmers breaking new ground
> They are enabled with GPS tracking and can be guided to an accuracy within two centimetres, enabling seed-planting equipment to sow 
> crops with precision to drive up efficiency, prevent wastage and boost environmental sustainability.
> 
> All that went out the window when the Inmarsat-41 satellite signal failed.
> 
> 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.
> 
> “If the Medibank and Optus data breaches didn’t make the agriculture industry sit up and take notice, the implementation of kill 
> switches on stolen Ukrainian tractors in 2022 should have been a three-alarm wake-up call.
> 
> “Digital literacy, capability and crucially, security, need to be priority investment areas for the industry and the Australian 
> government.”
> 
> Chris Groves, chairman of the National Farmers Federation farming systems committee, is planting canola, grazing wheat and oats on 
> his property between Canowindra and Cowra in NSW.
> 
> He said the winter cropping period had kicked off with a perfectly timed autumn break — the first major rainfall event of the season 
> that heralds the crops’ growth period — but the GPS outage would probably mean major costs and headaches for farmers.
> 
> “This is crippling for the farm community,” Groves said.
> 
> “I was talking to a cousin of mine, he has been farming for 70-odd years, and he reckons its as good an autumn break as he has ever 
> seen,” he said.
> 
> “But GPS is our guidance system that eliminates overlapping [in rows of seeds] and over-application of chemicals, and when that 
> system is down, the machine is literally down.
> 
> “My planter is 32 rows wide; if I overlap by just two rows, that is 4 per cent I am losing out on. When you’re paying $1300 [a 
> tonne] for fertiliser, that really adds up very quickly.
> 
> “My crop sprayer relies on the GPS signal to tell the spray unit how much chemical to put on, where it is in the paddock and how 
> many nozzles it needs working.”
> 
> There is no indication when the problem will be fixed.
> 
> Satellite provider Inmarsat said a fix was under way and customers would be updated on progress.
> 
> 


-- 
Kim Holburn
IT Network & Security Consultant
+61 404072753
mailto:kim at holburn.net  aim://kimholburn
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