On 7/14/08, Timo Jyrinki <[EMAIL PROTECTED]> wrote: > > 2008/7/13 BlueStar88 <[EMAIL PROTECTED]>: > > Feeding assist data to compensate bad hardware based reception is no real > > solution, since there are some FRs, which seem not to have any problems > to > > get a fast fix at all. > > My personal current belief is that those FRs are generally no better > than eg. yours or mine. It's simply a matter of software used and > especially the place used (some countries have also better GPS > coverage than others), plus whether one really has a table or so where > the device can easily be mounted firmly. If you hold it in your hand, > still otherwise, it might not be steady enough to get the fix (or does > someone know otherwise, eg. what kind of movement might corrupt the > received bits?). Or are there some people who get a fix while moving > Neo around? > > Since the software has zero GPS data saving features etc., it's no > wonder people easily think "it's broken". Especially, like in my case, > if people don't have previous GPS usage experience or don't know how > hard it's actually to "start from scratch" (scanning the whole sky) > without any eg. estimate on current whereabouts or any other help. And > also it doesn't help that if eg. people use AGPS UI which clears any > received data every time it's started. One reason I believe it's not > bad hardware reception is that when the fix is gotten, the fix stays > better than on many "real" GPS hardware. > > Still, I've yet to experiment more on what would be best ways to get > the initial fix. Even if feeded initial data, it seems relatively > impossible to get the fix around my place. I'm not sure what could be > improved still for the first fix, since after the fix is gotten it > stays so well one would imagine the fix should also be possible to get > in an (relatively) open area with a clear sky. > > -Timo > > _______________________________________________ > Openmoko community mailing list > community@lists.openmoko.org > http://lists.openmoko.org/mailman/listinfo/community >
This all are no arguments. With my TomTom device I can do a full reset so that no GPS data is available at all (also no time and so on) and still get a fix in < 3 minutes at 100 km/h. Well, I know the freerunner is no specialized gps navigation device, but the fact that the signals are so weak that it's barely possible to get a fix under optimal condition (clear view to the sky, antenna on top, without moving 1 mm) shows, that this is no simple software problem and has to be fixed.
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