GPS Accuracy Discrepancy

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morrcahn
 
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GPS Accuracy Discrepancy

Post by morrcahn »

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.

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adafruit_support_rick
 
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Re: GPS Accuracy Discrepancy

Post by adafruit_support_rick »

Not sure - I'll check

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adafruit2
 
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Re: GPS Accuracy Discrepancy

Post by adafruit2 »

That's odd, that number didn't come from nowhere - will change to 3m until we figure out where 1.8m came from!

morrcahn
 
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Joined: Sun Apr 20, 2014 4:56 pm

Re: GPS Accuracy Discrepancy

Post by morrcahn »

Ah, interesting. I'm interested to know where it came from. Thank you!

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skypuppy
 
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Re: GPS Accuracy Discrepancy

Post by skypuppy »

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.

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