Re: Which GPS ?

Chris Malcolm wrote:

> This would be possible, and IMHO a good idea, but AFAIK no current GPS
> does it. I suspect it may have something to do with standards such as
> NMEA, i.e., GPS position should be calculated purely on the basis of
> GPS signals. The problem is that if the altitude was wrongly
> calibrated, as will often be the case at switch on in poor reception
> conditions, the consequently wildly wrong altitude will give a wildly
> wrong position.

Ah yes, of course.

Paul


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