[aprssig] TAPR Differential GPS Reference Station
steve at dimse.com
Tue Apr 21 19:14:38 CDT 2009
I forget the exact algorithm TAC-2 used, it was some sort of
averaging. If I recall right the length was user-programmable but I
think 24 hours was recommended.
On Apr 21, 2009, at 7:56 PM, Boyd Prestwood K5YKG wrote:
> Steve, Wasn't this something like an "averaging" of accumulated
> positions over that 24-hour period? Then those coordinates were
> programmed into the Ref Station?
> It would be appreciated if anyone else knows how any of the client
> applications massaged or used any of this data, they could chime in
> Thanks Steve.
> 73 de Boyd K5YKG
> Steve Dimse wrote:
>> On Apr 21, 2009, at 2:16 PM, Boyd Prestwood K5YKG wrote:
>>> However it was my understanding that the site from which the Ref
>>> Station transmitted had to be surveyed for "exact" coordinates
>> The TAC-2 software performed a 24 hour integration of position,
>> this was found to produce a very accurate position. Surveys were
>> not necessary. Otherwise, my recollections match with yours.
>> Steve K4HG
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