It's basically a GPS receiver feeding the data stream into a data logger, for later processing.
I've never really understood why you'd have a GPS receiver that doesn't actually display a position (e.g. the various traffic camera alert systems). Okay, the display costs a couple of quid, but that's not a desperate additional cost over the GPS rx, antenna, etc.
The only possible advantage I can see is the 1 sec sample rate; not sure what rate general GPS receivers save tracks at. Given the low cost of memory these days, I can't see that 1 fix/s would fill available memory too quickly...
Posted: 14/07/2008 at 18:46