RG13/08, AIRSAR, flight day 175b/2014, Wytham Woods

[knpa]

Data location: /users/rsg/arsf/arsf_data/2014/flight_data/uk/RG13_08-2014_175b_Wytham_Woods_Plus_Airsar/

Data arrived from ARSF via network transfer on 25/06/2014

RG13/08 Scientific objective: RG13/08

RG13/08 Priority: 8?

AIRSAR Scientific objective: unknown

AIRSAR Priority: ?

PI: David Coomes

Notes: Fenix line 4 raw is tiny and looks like line failed. Lines 1,3,6 have slightly higher than usual difference between fps_set and fps_qpf (over 0.25 but under 1). Line 4 has a crazy fps_qpf value. Raw fenix 5 is not a proper flightline - don't processs this. There is FW.

Sensors:

Fenix (11/11/2014)
LiDAR (11/11/2014)
FW LiDAR (11/11/2014)
RCD (11/11/2014)

[dap]

Navigation Processing

OXFR Basestation Data
Latitude	51 49 26.25367
Longitude	-1 17 18.72376
El Height	119.766m

[dac]

Started RCD processing.

tec did raw RCD to Tiff conversion as was already set up on his machine.

Created and checked thumbnails.

Waiting on nav data

[dap]

For the first five seconds of the first flightline, the navigation data has a quality of 2, not 1.

[dap]

Navigation processing complete, now beginning LiDAR Processing.

[tec]

Hyperspectral Processing
Started processing fenix.

[dac]

Tagged RCD images using navigation data. No navigation data available for 153 and 154.

[tec]

Navigation Processing
Messed up the nav, reprocessed nav, got even better solution. Copying over now.

[dap]

Note, logsheet will need reproducing before delivery of LiDAR or Hyperspectral data, since navigation data had to be reprocessed.

[tec]

Hyperspectral Processing
Line 4 is unusable.

SCT Values

Flightline	FENIX
1	0.98
2	0.99
3	0.95
4	N/A
5	0.94
6	0.99
7	0.90
8	0.98

[tec]

Hyperspectral Processing
Ready for delivery check

[dap]

LiDAR Processing

Found a bug in alsproc on grid while trying to find roll correction values. Bug has been reported, will run on local machine instead.

[dac]

RCD Processing
Reprocessed RCD data with new navigation data, have made delivery but script to produce readme is giving error that none of the images are in the list of photos from kml file - looking into.

[dap]

LiDAR Processing

Found roll error for lines 163102 and 162305 to be -0.004264393 radians. Will now process other lines with this roll error to check for consistency.

[dap]

LiDAR Processing

Found roll error for cross line (161004) to be -0.004434392 radians

[dap]

LiDAR Processing

All roll errors have now been found. There was a lack of buildings in the overlaps between flightlines, so flat terrain was used where possible to determine these roll errors (table includes roll errors found previously):

Flightline	Roll error	Pitch error
155434 (01)	-0.003934392	-0.000880469
155755 (02)	-0.004434392	-0.000880469
160129 (03)	-0.003934392	-0.000880469
160503 (04)	-0.003934392	-0.000880469
161004 (05)	-0.004434392	-0.000880469
162305 (AS1)	-0.004264393	-0.000880469
163102 (AS2)	-0.004264393	-0.000880469

Will now process deliverable files using ALSPP

[dac]

RCD Processing

Found error with 'create_latex_camera_readme.py' was naming of files, which used 'AIRSAR' instead of the project code. Renamed files and ran OK. Also updated scripts to print error message for naming errors.

Ready for delivery check.

[dac]

Starting Hyperspectral Delivery Check

[tec]

RCD Delivery Check
Delivery check started.

[tec]

RCD Delivery Check
Would say in data quality 00001 is over exposed, 0004-9 00014,00015 have blue'ish tint around edge.

Once you've done that, its ready to go.

[dac]

Hyperspectral Delivery Check

Delivery check complete, some minor issues corrected. Ready to deliver.

• Project code listed in read me as 'RG13/08 AIRSAR' rather than just 'RG13/08' - have corrected.
• Lines 4 and 5 missing, 5 not on logsheet, line 4 mentioned in readme.
• In mask file, refers to Eagle smear correction, have changed and in template to just smear correction (even though it only applies to Eagle sensor).
• In level 1b data bands 240 - 260 are noisy (absorption features?) and in line 6 there is a large cloud shadow in centre of image causing some underflows.
• Suggest changing delivery directory name from 'AIRSAR-175b' to use project code (RCD also needs to be changed).

[dac]

RCD Processing
Added text to data quality. Renamed directory from AIRSAR-175b to use project code.
Will send with hyperspectral data once hard drives are available.

[tec]

Awesome, thanks for corrections. I shall mark the hyperspectral and rcd as ready to deliver. Shall also prod ben about hard drives today.

[dap]

LiDAR Processing

Read me has been created, now just need to measure elevation differences and add them in to the table in the read me.

[dap]

LiDAR Processing

Added elevation differences to read me. Processed LiDAR data now ready for quality check.

[dac]

LiDAR Delivery Check
Started LiDAR Delivery Check.

[dac]

LiDAR Delivery Check

Delivery check complete, fixed some minor issues. Ready to deliver.

• ASCII lidar files didn't have windows line endings - fixed.
• Contains clouds, have been classified out as noise OK.
• Full waveform data not requested but processed anyway.
• Lines 1 -- 5 are missing a lot of waveforms when viewed in Waveviewer. These were all low altitude lines so I think the problems could be due to the time between each return pulse being too small for the digitiser. This is just a guess though.
• No errors converting data to LAZ format.
• Reworded sentance 'Elevation differences could not be measured between many of the low altitude lines and the cross-line as the areas of overlap lack in flat terrain.' to 'Elevation differences could not be measured between many of the low altitude lines and the cross-line as there were insufficient areas of flat terrain.'
• Difference to ASTER (from demcompare.py) 0.6 m

[dap]

Hyperspectral

Renamed individual flightline screenshots from <flightline name>_mapped_osng.bil.jpg to <flightline name>.jpg (ran rename.sh -f _mapped_osng.bil.jpg .jpg from screenshots directory).

[dap]

All data delivered to Dr Coomes at the University of Cambridge (11/11/2014)