2012/2/21 Boris Cornet <[email protected]> > > The advantage of the one on Dealextreme is the price. Apart from > > that, there's not much that can go wrong I suppose. But as for > > accuracy it is probably not among the best. > > It's really cheap. However, my experiences with cheap devices is, that > you can't rely on their results. One day, you get a good recording, > and the other day you get complete crap. They use cheap chipsets, > and - what's worse - cheap antennas. >
I see. Which means that it should supply HDOP values for it to be possible to assess the quality of the track. > If satellite positions or sky view is suboptimal, they start recording > fantasy-coordinates. And you cannot tell the difference (you cross a > mountain, one one side the track is accurate, on the other side it has > up to a few hundred meters offset). > Must say though, that my track didn't have any points diverging anywhere near more than 50 m, but I haven't really tested it much. -- Guttorm
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