Re: Does averaging improve GPS accuracy?

On Sep 20, 7:48 pm, Sam Wormley <sworml...@xxxxxxxxx> wrote:
Anne wrote:
Hi!

I have an application for the PPC that gets the location using an I-
Blue 737 Bluetooth GPS. I get the GPGGA string and parse the latitude
and longitude. I throw the values with a bad fix number, less than 4
satellites and HDOP values above 6. Would averaging 10 GPS readings
over 10 seconds improve the accuracy of the latitude and longitude?

Thanks a lot!
Anne

Probably not, Anne.
http://edu-observatory.org/gps/gps_accuracy.html

Thanks for the quick responses!

I took 100 GPS measurements and looked at the data two ways:

1. Plotted the data using a 10 point running average
2. Plotted the data with no averaging

The data with the 10 point running average is much tighter (the std
deviation is smaller) than with no averaging. Am I just improving
the precision not the accuracy? Accuracy can only improved over
longer periods of time?

Thanks a lot!
Anne

.

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