On 2023/04/24 12:45 pm, Tom Worthington wrote:
On 22/4/23 15:54, Roger Clarke wrote:
... So you're suggesting that the chairman of the NFF farming systems committee
was having a lend of a city reporter ...
An increase in cost of 4% is significant, but that is far from being unable to plant a crop. If this function is critical, the
farmer could purchase a navigation system which does not depend on the US GPS system.
While I don't exactly disagree with the sentiments of that statement, it is wrong and beside the point. Firstly, there are 6
countries owning GNSS systems, most receivers can use them all, only one is the US-GPS. Secondly, there was no problem with the
GNSS, the problem was with their data connection.
As for other systems, I guess the advantage of a GPS/GNSS based system is that it can be applied to any field at short notice. Other
systems require complicated hardware to be set up on the field. I guess cost would be an issue here and I have no idea of the
relative costs.
Other satellite navigation networks exist, as well as ground based radio, & laser systems. Low cost LoRa digital radio networks
have been tested for navigation. Their 100m accuracy (Fargas & Petersen,2017) should improve at short range on a farm. Newcastle
company CORE Electronics sells LoRa equipment. https://core-electronics.com.au/wireless/lora/gateways.html
Reference
Fargas, B. C., & Petersen, M. N. (2017, June). GPS-free geolocation using LoRa in low-power WANs. In 2017 global internet of
things summit (Giots) (pp. 1-6). IEEE. https://backend.orbit.dtu.dk/ws/portalfiles/portal/130478296/paper_final_2.pdf
--
Kim Holburn
IT Network & Security Consultant
+61 404072753
mailto:[email protected] aim://kimholburn
skype://kholburn - PGP Public Key on request
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