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[aprssig] The best resolution of position from APRS (expiremnttwo)

Scott Miller scott at opentrac.org
Wed Jan 4 16:24:08 UTC 2006


> That seems to indicate that the NMEA data stays the same - 
> its the display
> that changes.

The NMEA output shouldn't change.  The format is part of the NMEA 0183
specification.  Remember that your Garmin GPS uses an entirely different
internal representation (probably IEEE 64-bit floating point in radians) for
its position, and translates that (with varying amounts of rounding error)
into the appropriate formats for display and for NMEA output.

Scott
N1VG







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