GPS Tip: Increasing accuracy for a single location
- From: Sam Wormley <swormley1@xxxxxxxxx>
- Date: Wed, 08 Feb 2006 18:45:16 GMT
GPS TIP OF DAY
Tuesday - February 10, 2006
GPS Tip: Increasing accuracy for a single location
http://www.mobilecrossing.com/support/tips.html
The easiest way to increase the accuracy of a single location is to average the values of several GPS entries. Some GPS units can do this with an averaging feature built into the product. PDA’s can use special programs that are designed to do this sort of averaging. However, a short term average done in this way isn’t quite as good as taking a number of separate readings at different times of the day and then averaging manually.
Another interesting way to average is to make sure the GPS (or a program with a tracklog) is not pinned or locked to a road and then just let it sit for a while with the tracklog enabled. The resultant tracklog can be viewed graphically and the center position can be determined fairly easily.
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To find a more thorough treatment of averaging look at:
http://users.erols.com/dlwilson/gps.htm
http://users.erols.com/dlwilson/gpsavg.htm
http://edu-observatory.org/gps/gps_accuracy.html
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