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Accuracy to 1 meter??
dmq400
0 Points
HI - Brand new here and trying to catch up on the technology....and a bit lost. I read accuracy of waypoints is slowly becoming cost effective for a handheld device and need to know if its here....and any recommendations.
We have a specialized plant nursery with over 500 plants (waypoints?) that are planted in a 3' x 4' grid. Hardest part of this is keeping track of the names of the cultivars. Are there hand held devices out there that can give me 500 named waypoints and is accurate to about 3 ft? Thanks for the help
We have a specialized plant nursery with over 500 plants (waypoints?) that are planted in a 3' x 4' grid. Hardest part of this is keeping track of the names of the cultivars. Are there hand held devices out there that can give me 500 named waypoints and is accurate to about 3 ft? Thanks for the help
Comments
https://geospatial.trimble.com/
I recall that something like this is in the $8k range:
https://geospatial.trimble.com/products-and-solutions/geo-7x-gnss
In the consumer space, there are a few products with enhanced accuracy, but I don't think they would be reliable enough. The Bad Elf Surveyor claims 1-meter accuracy
https://bad-elf.com/pages/be-gps-3300-detail
...but then read the fine print, LOL
"In ideal conditiions, unobstructed view, with SBAS lock, device allowed to settle for at least 2 minutes" :D
And then notice that 2.5-meter accuracy is typical. You can get that with the Garmin GLO for hundreds of dollars less.
https://buy.garmin.com/en-US/US/p/645104
I wrote about it here: http://forums.gpsreview.net/discussion/30108/what-is-gps-accuracy-testing-the-garmin-glo-in-the-forest
and in this old review: https://gpstracklog.com/2013/04/garmin-glo-review.html
I doubt that the GLO is accurate enough for your application however. But the nice thing about bluetooth receivers is that they can work with hundreds of apps on iOS and Android phones and tablets. SXblue makes some very accurate bluetooth devices. But I think you're getting into thousands of dollars again..
https://sxbluegps.com/products/gps-gnss-receivers/
https://en.wikipedia.org/wiki/Indoor_positioning_system
Sorry, I didn't mean to offend. You are right, I know nothing about your business, so I should have just not posted rather than making a useless suggestion. I hope you can find something that works.
"1 meter accuracy" is generally taken to mean +/- one meter. So, if you mark a waypoint and then return to it later, you would expect to be somewhere inside a one-meter radius (2-meter diameter) circle centered on the original point. Your plants are too close together to be uniquely identified at that resolution. And it's even worse that that, because "1 meter accuracy" doesn't really mean "1-meter accuracy"... there's some "fine print" associated with that specification along the lines of "1-meter accuracy 75% of the time". If that was the actual spec, then 25% of the time you could be sent someplace wildly wrong.
We discussed that in the accuracy thread I mentioned above, see Tim's comment here: http://forums.gpsreview.net/discussion/comment/202390/#Comment_202390