EUFAR11/04, flight day 097/2011, HYMEDECOS (Gradients)

[knpa]

Data location: ~arsf/arsf_data/2011/flight_data/spain_portugal/EUFAR11_04-2011_097_HYMEDECOS-gradients/

Data arrived from ARSF via network transfer on 19/04/11.

Scientific objective: Applied studies relating to soil erosion, biodiversity - vegetation and steppe bird - dynamics, estimates of forage crop quality and carbon storage potential will be carried out. Two spatial resolutions.

Study location: South Portugal

Priority: a4h

PI: Patrick Hostert
Co-PI: Patrick Osborne

Other contacts:
Pedro Leitao

Sensors:

• Eagle (03/08/11)
• Hawk (03/08/11)
• Leica LIDAR Replacement (30/08/11)
• RCD (03/08/11)

[emca]

The LiDAR lines at higher altitude (lines 7-12) have very low intensity values - initally thought to be caused by the intemittent AGC issue that affected the calibration data (#389). Queried with Leica and they think it is a result of the very high altitude of flight.

[knpa]

Taking HS.

[knpa]

The only basestation data for this flight is the ARSF temporary basestation over 100km away from main site. I've also found a EUREF permanent basestation (LAGO) but this is only 30s interval. Temporarily on hold whilst Ops get back to us to let us know if there is any better data for us to use.

[anch]

Processing RAW camera to tif.

[anch]

Produced thumbnails from TIFFs

[knpa]

Basestation data received today (05/07/11) from Pedro Leitao. Should be able to unblock this project.

[knpa]

Was on hold for a few more days whilst we waited for precise basestation coords from Pedro.

anch is now doing the navigation processing.

[anch]

Navigation has been processed and verified against ASTER to be correct.

[anch]

Camera ready for delivery check at:

/data/okhotsk1/scratch/arsf/arsf_data/2011/flight_data/spain_portugal/EUFAR11_04-2011_097_HYMEDECOS-gradients/processing/delivery/EUFAR11_04-097-camera-20110718

[knpa]

Created las files.

Whilst finding height differences/checking for roll, found that the high flightlines are on average ~12cm above the low flightlines. The hight flightlines are particularly high, ~14,000ft above the terrain.

[knpa]

A possible cause for the above has been identified: the pulse rate changed between the high and low lines, which put it under the TPR. However the IBRC is only single table and the TPR offset -0.001 so there is a question mark over whether the increased pulse width was dealt with properly. Emca is going to query this with leica.

[knpa]

Found HS scts:

	e	h
1	-0.06	-0.07
2	-0.04	-0.05
3	-0.03	-0.06
4	-0.02	-0.03
5	-0.01	-0.06
6	-0.05	-0.05
7	-0.01	-0.06
8	-0.05	-0.06
9	-0.02	0.24
10	-0.02	-0.06
11	-0.05	-0.07
12	-0.05	-0.06

[knpa]

The above were found with aplcorr so needles to say they do not have the -0.055 adjustment.

[knpa]

Hyperspectral ready for delivery check (EUFAR11_04-097-hyperspectral-20110722)

[knpa]

Completed RCD Delivery check

No problems found.

This project has a co-pi so may need to be delivered to both of them.

[anch]

Finished delivery check.

Couple of things:
A few dropped frames at the start of hawk line 8.
Readme is missing some info (e.g. Project code) on first page.

Other than that it's all food and ready to go.

Please note that there is also a camera delivery ready for this project, and it may need to go to a CO PI

[knpa]

Dropped frames are not severe enough to be mentioned in Readme.

Can't find the missing information in the Readme on page 1 that anch was referring to.

Preparing delivery for postage (along with RCD). With current pulse rate height discrepancy investigation, lidar may take a little longer.

[knpa]

Hyperspectral and RCD delivered today (03/08/11)

Two packages sent, one to Patrick Osborne in Southampton and one to Patrick Hostert in Berlin.

[knpa]

LIDAR: Leica have sent us a dual IBRC table (SN084_20110509_DUAL_IBRC.csv) which has improved the discrepancy. To remove the remaining difference they suggested adding a non-zero TPR range offset for use with this table. A value of -0.04 appears to give the optimal result.

Unblocking sensor and continuing processing.

[knpa]

Relatively large discrepancies between the high alt flightlines which is probably to be expected. No consistent roll issue identified in project but one line (13:08, 005_45a) has a massive roll (0.5m-0.8m) when compared to an another line flew later in the same place and same direction (14:43, 005_45b). By comparing it to the other lines that cross it (esp low flightlines which are more accurate), have decided that it is the 13:08 line which is askew so will attempt to correct that to match 14:43.

[knpa]

Found an approximate fix for 13:08 using a roll value of -0.0032

[knpa]

Finished QC stage. Preparing delivery.

[knpa]

LiDAR ready for delivery check at:

~knpa/2011_arsf_data/spain_portugal/EUFAR11_04-2011_097_HYMEDECOS-gradients/processing/delivery/EUFAR11_04-097-lidar-20110819

[adbe]

Starting Delivery Check

[adbe]

Removed .xml files from dem directory

Data ready to go

[knpa]

LiDAR dispatched today (30/08/11) to Patrick Hostert (Berlin) and Patrick Osborne (Southampton) (two packages).