GPS Accuracy Discrepancy
Moderators: adafruit_support_bill, adafruit
Please be positive and constructive with your questions and comments.
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- Posts: 4
- Joined: Sun Apr 20, 2014 4:56 pm
GPS Accuracy Discrepancy
It's stated on the product page (https://www.adafruit.com/products/746) for the Adafruit Ultimate GPS that it has a 1.8 m positional accuracy, while the datasheet itself (https://www.adafruit.com/datasheets/Glo ... et-V0A.pdf page 16) says that it can provide 2.5 m accuracy with assistance. Is there something I missed? Thank you ahead of time.
- adafruit_support_rick
- Posts: 35092
- Joined: Tue Mar 15, 2011 11:42 am
Re: GPS Accuracy Discrepancy
Not sure - I'll check
- adafruit2
- Posts: 22144
- Joined: Fri Mar 11, 2005 7:36 pm
Re: GPS Accuracy Discrepancy
That's odd, that number didn't come from nowhere - will change to 3m until we figure out where 1.8m came from!
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- Posts: 4
- Joined: Sun Apr 20, 2014 4:56 pm
Re: GPS Accuracy Discrepancy
Ah, interesting. I'm interested to know where it came from. Thank you!
- skypuppy
- Posts: 44
- Joined: Wed May 28, 2014 6:00 pm
Re: GPS Accuracy Discrepancy
Those 2 and 3 meter numbers are *theoretical* maximums. In real life, it is usually more like 10 to 20 meters at best. If you can't use the WAAS signal, then altitude readings are just best guesses and can vay by 30 meters from one second to the next.
Please be positive and constructive with your questions and comments.