[time-nuts] DGPS at home

ehydra ehydra at arcor.de
Fri Nov 25 00:26:04 EST 2011


I read that for position accuracy ionospheric effects are the main 
source for typical single frequency receivers. So looking for DOP would 
be not helpful because the ionospheric way is for two 'relative' on the 
same position located teceivers vs. satellites position almost the same 
and that would cancel this error source out!? The end-effect should be 
better values than seen in the datasheet.

I must ask again. More opinions?

- Henry



Azelio Boriani schrieb:
> Usually GPS receivers have DOP figures you can use to estimate the position
> precision. Maybe worth using timing receivers for position to increase the
> position accuracy.
> 
> On Thu, Nov 24, 2011 at 1:01 PM, ehydra <ehydra at arcor.de> wrote:
> 
>> Hi all!
>>
>> I wonder what would be reasonable location accuracy if two cheap same type
>> GPS modules will be several meters apart? I understand that it involves
>> statistical numbers.
>>
>> Any idea? Say for a small robot.
>>
>> Thanks!
>> - Henry
>>
>>
>> --
>> ehydra.dyndns.info

-- 
ehydra.dyndns.info




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