Magic, flight day 238/2021, Kiruna, Sweden

[wja]

Data location: /users/rsg/arsf/arsf_data/2021/flight_data/sweden/Magic-2021_238_Kiruna/
Data arrived from Kings College London via hardrive from Sweden on September 20th 2021.

Scientific objective: International project (includes NASA, CNRS, ESA, DLR, Eumetsat) to monitor and identify methane inventories in the arctic. JPL's HyTES instrument was utilised. A total of three aircraft were used to collect data, along with deployed balloons and ground measurments.

PI: Martin Wooster

[wja]

Unpacking

• run_unpacked_checks.py reported nav time errors:

Running check: arsf_check_library.checks.check_nav_timestamps                                                         
No date record ($GPZDA) found in nav file - will assume it is binary if cannot find a line starting with '$GPGGA' or '$PRDID'.                                                                                                              
Error in /users/rsg/arsf/usr/lib/python/site-packages/arsf_unpacking/unpacking_utilities.py : write_message: Nav file does not have time stamps or failed to read the file using readAscii: /users/rsg/arsf/arsf_data/2021/flight_data/swede
n/SwathS-2021_238_Kiruna/hyperspectral/fenix/FENIX238-21-1/capture/FENIX238-21-1.nav      

Running check: arsf_check_library.checks.check_nav_last_frame
No date record ($GPZDA) found in nav file - will assume it is binary if cannot find a line starting with '$GPGGA' or '
$PRDID'.
Error in /users/rsg/arsf/usr/lib/python/site-packages/arsf_unpacking/unpacking_utilities.py : write_message: Nav file 
does not have time stamps or failed to read the file using readAscii: /users/rsg/arsf/arsf_data/2021/flight_data/swede
n/SwathS-2021_238_Kiruna/hyperspectral/fenix/FENIX238-21-1/capture/FENIX238-21-1.nav

• No logsheet (may be labelled as something else)

[wja]

Navigation Processing

Issues when importing navigation data:

• 373786.389 : WARNING Gap of 373704.4027 seconds in CHECKDT input data
• 373863.191 : WARNING : Gap of 15.2053 seconds in CHECKDT input data

Flight start: 26/08/2021 07:49:47 (GPS second of week: 373805)
Flight end: 26/08/2021 10:11:12 (GPS second of week: 382290)

Therefore issues are at 19 secs and 58 secs into flight.

Skipping the inport of first nav file (238_21.236) resolved this issue.

KIRU basestation downloaded from epncb.eu

RTX coordinates computed the following adjustments to KIRU:

• Horizontal sigma: 0.004 m
• Vertical sigma: 0.005 m

POSPac recommends trimming start and end of fligth so the termini are closer to KIRU basestation

Current Start:	373864.000	Recommended Start:	375048.000
Current End:	382272.000	Recommended End:	382092.000

RMSE spikes and gets noises for a period between 378500-379000: horizontal RMSE is < 2cm, vertical RMSE is < 4 cm.

Outside of this period, horizontal RMSE is < 1.5 cm and vertical RMSE is < 2.5 cm

[wja]

Hyperspectral Processing

Wavelengths replaced in fenix headers. All data binned to factor of 2.

All lines mapped as 3 band RGB

[wja]

Delivery Ready for Checking

[mark1]

Hyperspectral deliver check
Fodis dir was present - has been removed
No project information

All files checked and mapped files sent to grid to zip

[wja]

Thanks, have added project XML.
Ready to Delivery

[wja]

Delivery Sent

Finalised, put on FTP slot 5

PI notified

[wja]

Archiving

Created JSONs, committed them to database.

Ready to sync to CEDA.

[wja]

Archiving

Transfer to CEDA will start once flight 236 is finished (ticket #684)

[wja]

Archiving

Transfer to CEDA complete