JJB*
Core User of DJI
Flight distance : 13713793 ft
Netherlands
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GaryDoug Posted at 5-15 14:16
Here are the files. See what you can find about that sudden change.
Dat file is here >>> https://www.mediafire.com/file/5 ... -41_FLY097.DAT/file
However I do not think the VPS was indicating out of range at only 19 feet. It later recorded a reading of 34 feet (real altitude of 80+ feet), more like the actual maximum. Did you think that was 19 meters?
Hi Gary,
Had a look at your log, convert the log 2x, TxtToCSV and AirData.
TxtToCSV is better, as in the csv file a column VPS active Y or N, Airdata shows the last VPS height in each next record until VPS height is active again.
See myu double chart, top is TxtToCVS, lower is AIRDATA. (oops, top - default set to meters, lower = set to feet ; but chart lines are ofcourse the same)
Your 8m7s mark is at the X-axis at 4875, height drop 19 to 9.2 feet = vertical line
In the lower chart you see a flat line, before the VPS is active measuring again, previous heigt a steady flat line of the last value of 19 feet. VPS line not visible in the upper chart as VPS sensor does not measuring height (i guess water reflections, not enough signal back to the drone).
Climbing your drone VPS height measured up to 33.8 feet, TXTtoCSV data.
PS the reason that this flat line in green is seen in the lower chart is due to my algorithm, the next flat line (further in time) is skipped (see difference up and lower chart) as the baro height > my own algorithm thresshold.
Hope it does make sense yo you, questions just ask.
cheers
JJB
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