On the ascent, the barometric curve will be smooth and reasonably accurate, save for the "Mach bumps" around the transsonic region, if you're going that fast. The GPS is likely to lose at least a few satellites in its fix at high speed, making GPS altitude inaccurate (or unreported) for most of the ascent.
However, once it slows down, and assuming the GPS maintains or regains lock, it will give you a more accurate absolute height at apogee. Barometers can only infer altitude from a standard model of the atmosphere, so they're subject to pressure deviations, wind, etc. A GPS fix with at least 5 or so satellites will be quite accurate. Casey On Mon, Jul 13, 2015 at 4:03 PM David Abmayr <[email protected]> wrote: > Which is a more accurate measure of altitude on a TeleMega, barometric > altitude or GPS height (at ~10k ft)? > > David > > > _______________________________________________ > altusmetrum mailing list > [email protected] > http://lists.gag.com/mailman/listinfo/altusmetrum >
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