<div><span class="gmail_quote">On 7/14/08, <b class="gmail_sendername">Timo Jyrinki</b> <<a href="mailto:timo.jyrinki@gmail.com">timo.jyrinki@gmail.com</a>> wrote:</span>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">2008/7/13 BlueStar88 <BlueStar88@xenobite.eu>:<br>> Feeding assist data to compensate bad hardware based reception is no real<br>
> solution, since there are some FRs, which seem not to have any problems to<br>> get a fast fix at all.<br><br>My personal current belief is that those FRs are generally no better<br>than eg. yours or mine. It's simply a matter of software used and<br>
especially the place used (some countries have also better GPS<br>coverage than others), plus whether one really has a table or so where<br>the device can easily be mounted firmly. If you hold it in your hand,<br>still otherwise, it might not be steady enough to get the fix (or does<br>
someone know otherwise, eg. what kind of movement might corrupt the<br>received bits?). Or are there some people who get a fix while moving<br>Neo around?<br><br>Since the software has zero GPS data saving features etc., it's no<br>
wonder people easily think "it's broken". Especially, like in my case,<br>if people don't have previous GPS usage experience or don't know how<br>hard it's actually to "start from scratch" (scanning the whole sky)<br>
without any eg. estimate on current whereabouts or any other help. And<br>also it doesn't help that if eg. people use AGPS UI which clears any<br>received data every time it's started. One reason I believe it's not<br>
bad hardware reception is that when the fix is gotten, the fix stays<br>better than on many "real" GPS hardware.<br><br>Still, I've yet to experiment more on what would be best ways to get<br>the initial fix. Even if feeded initial data, it seems relatively<br>
impossible to get the fix around my place. I'm not sure what could be<br>improved still for the first fix, since after the fix is gotten it<br>stays so well one would imagine the fix should also be possible to get<br>
in an (relatively) open area with a clear sky.<br><br>-Timo<br><br>_______________________________________________<br>Openmoko community mailing list<br><a href="mailto:community@lists.openmoko.org">community@lists.openmoko.org</a><br>
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<div>This all are no arguments.</div>
<div>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.</div>
<div>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.</div>