Group: Forum Members
OK, thanks Tim, so you don't do any checks or validation, just grab the info, regardless of any accuracy or 'loss of signal' report from the GPS?
I did some straight GPS logging on an aeros flight before I asked this and it didn't seem to record any of these strange values, certainly none of the below sea-level altitudes were there and no zero speeds - of course, the logger was probaly using a much more frequent GPS report time and so the comparison may be unfair
I've not programmed GPS on Android, but wrote NMEA based tracking systems for Couriers and Yachts years back, so I'm used to pulling the data apart - I also logged GPS on my iPhone and that seemed OK (for SkyDemon in flight I use a Samsung Galaxy Tab 3), so I assumed the GPS wasn't being affected by the a/c attitude and that it was Skydemon filtering/smoothing the data and getting it wrong
The Inverted portion of any flight manoevre is short, and the Bulldog has a very open canopy - when I was first testing Skydemon to see if I'd buy it, I used it on trains with a very limited view of the sky and had no issues (though obviously they didn't change attitude)
I guess the original question remains the same - what's the criteria for stopping a flight log and could this be extended for aerobatics flights and/or can the frequency of position reports be tuned to minimise the number of 'bad' reports received.
I also wonder if anyone has found any major differences in the loss/re-aquire performance of Android/iPhone/iPad built in GPS?
Anyway, I'll have another look at what's going on when I'm next airborne and see if I can figure any more out.