Accurate USB GPS Unit

Question

This afternoon I tested an AmbiCom USB GPS and the cordinates were jumping all over. Most of them were at least 30 feet off. Anyone have any experience with any other brands/have any recommendations for a more accurate USB GPS unit?

That's called "Jitter" (IIRC) and 30 feet (10 meters) is about as accurate as consumer level devices get... — Mark Henderson, Dec 11 '09 at 01:03
if you want significantly better accuracy, join (or possibly contract for) the US military. — quack quixote, Dec 11 '09 at 09:20

score 2 · Accepted Answer · answered Dec 11 '09 at 08:10

2

Accuracy of GPS depends on many factors:

the consumer accuracy (15 to 30 ft approx.), due to jam in consumer signals (the military accuracy is far better)
the number of satellites in view (3 is the bare minimum)
the environment (near building or structure, reflection and refraction of materials)

So don't expect a better accuracy.

answered Dec 11 '09 at 08:10

Laurent Etiemble

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[Nowadays, is there any way to track the movements of my vehicle with GPS precisely?](https://superuser.com/questions/1723070/gps-tracking-precisely) – oldboy May 26 '22 at 07:25

score 1 · Answer 2 · answered Dec 11 '09 at 02:20

1

A very quick read of the specs for the device indicates that GPS accuracy is 16 to 33 ft Approximately. What you have observed is exactly how the device works or for that matter most GPS devices.

answered Dec 11 '09 at 02:20

Accurate USB GPS Unit

2 Answers2