[gps-talkusers] Re: Earthmate Question
- From: Michael May <mikemay@xxxxxxxxxxxxxxxx>
- To: gps-talkusers@xxxxxxxxxxxxx
- Date: Mon, 12 Mar 2007 16:04:49 -0700
Terrie,
You are probably correct that her slow walking speed is scrambling the GPS
heading information. We do recommend that the user try to walk at least 2 miles
per hour. Otherwise, it is difficult to distinguish changes in the user's
position from the GPS fluctuation.
Reading the GPS accuracy document available in our documents zip file or on the
document CD that comes with the unit is a good idea.
Mike
At 08:20 AM 3/11/2007, you wrote:
>I am writing for a friend of mine who has a BrailleNote classic running 6.1
>Keysoft. She is using the Earthmate serial GPS receiver. She has the previous
>GPS version because the current one would not run on her system. She can not
>afford to upgrade to the MPower.
>She is a cane user and walks fairly slowly, less than 2 miles per hour anyway.
>
>
>
>She is experiencing extremes of GPS accuracy. She is not in an urban canyon at
>all. Here is an example of the kind of thing that happens. Going west on a 4
>or 5 block walk, the GPS may be totally accurate. Coming back east an hour
>later, it will say she is at one street and never change. It continues to say
>she was at a given street until she gets home, 6 blocks away. She had
>satelites at this time.
>
>
>
>With satelites, however, she notices quick changes in numbers being
>trackedshe checks and has 5 and then checks immediately thereafter and has 1
>and then 5and then 2 and thenb 1.
>
>
>
>Cables seem to be working well and the receiver is pointed in the right
>direction.
>
>
>
>Can anyone offer suggestions or some help to see if we can get more consistent
>GPS use?
>
>What type of GPS should be selected in the settings?
>
>Anything else we can try?
>
>Thanks for your help. She rally wants braille GPS and this is such a good
>option, ifonly we can get it to work.
>
>
>
>
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>
>Terrie Terlau
>
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