OBT /UTC drift problem in an_downsample

irfu / Lapdog_GIT

Matlab program for generating Rosetta RPCLAP calibrated-level & derived-level data from pds-generated data

BSD 2-Clause "Simplified" License

0 stars 1 forks source link

OBT /UTC drift problem in an_downsample #10

Closed frejon closed 5 years ago

frejon commented 5 years ago

Downsampling low frequency measurements Error at loop step 28 or foutarr{}(2701), file /data/rosetta/LAP_ARCHIVE/RO-C-RPCLAP-5-1601-DERIV-V0.9/2016/JAN/D19/RPCLAP_20160119_120205_914_I1L.TAB ans =

'MATLAB:badsubscript'

ans =

'Index in position 1 exceeds array bounds (must not exceed 2700).'

an_downsample, 330,analysis, 93,rerunlapdog_test, 399,macrono1=802, 2=802

frejon commented 5 years ago

between OBT: 411825648.12102 and 411868717.38633 and UTC '2016-01-19T12:02:10.598014' '2016-01-19T23:59:59.992035' an interval of 11.9637 hours, there is a drift between UTC & OBT of 0.0108 seconds. There is simply a larger span of seconds in the OBT than an_downsample expects.

Because of this, several measurements in RO-C-RPCLAP-5-1601-DERIV-V0.9/2016/JAN/D19/RPCLAP_20160119_120205_914_I1L.TAB

end up on the wrong side of intervals, and more importantly, one or two measurements end up on the next day, triggering the error.

I guess fixing this error should be by converting OBT or UTC to ET via SPICE, and then doing the "inter" interval finding algorithm with this new time-vector.

ErikPGJ commented 5 years ago

Is still unresolved?

frejon commented 5 years ago

yep