[gps-talkusers] Re: Comparing two GPS elevation readings


Hi Richard
GPS altitude accuracy is not as good as vertical accuracy and depends heavily on location of satellites. 20 to 30 meters (60 to 100 ft) is a typical altitude error and there might easily be more than 50 meters variation within few minutes especially if the receiver does not have a good view to the sky. 


--
mr. M01510 & guide Loadstone-GPS


On Thu, 18 Dec 2008, Richard Turner wrote:


Greetings,

I was curious about the elevation at our house due to some odd weather we
are having.
I have a Voice Sense with the latest Sense Nav, and a BrailleNote PK running
Sendero 5.2.  Both units are using a Holux m1000.
Having them sitting side by side and the receivers in a window sill also
side by side; the Voice Sense says we are at 269 feet, the PK says 226 feet.
They both reported 18 feet accuracy with 9 satellites.

I find that interesting.  Is that one of the differences with the 5.2
release that may disappear once the Sense Nav is updated to the newest SDK?
Assuming they are going to do that of course.

Thanks,
Richard

Other related posts: