GB24/03, flight day 222/2022, Wytham Woods and Turnstall Forest

[wja]

Data location: /users/rsg/arsf/arsf_data/2024/flight_data/uk/GB24_03-2024_226_Wytham_Woods_Tunstall_Forest

Data arrived from via hard drive October 2024
PI: Martin Wooster
Sensors:
PhaseOne
Optech Galaxy (LiDAR)

[wja]

Navigation Processing

Post-processed SBET file has been exported.

Multibase method used with OS basestations.

Broadcast and precise ephemerides had to be downloaded and input into PosPac manually.

Have exported "flipped" and "not flipped" versions of the SBET, will confirm later which one to use.

[mark1]

LiDAR data were processed to create "example datasets". These are not expected to be positionally accurate due to factors including incorrect settings used at data collection, unknown time offset for discrete/fwf system (at time of processing), and unsuitable ground control for elevation calibration.

Data were split into two deliveries as they cover two different sites.

Full waveform data PLS files were filtered to remove some noise using a command such as below to only keep returns between 100 and 220 elevation:

for fname in `find . -iname 'LDR*.pls'` ; do  ~arsf/usr/share/wine.sif wine /usr/local/bin/pulse2pulse.exe -keep_first_z 100 220 -i $fname -o filtered/`basename $fname` ; done

Only one example delivery was created with FWF data, the other with discrete data only.

[asm]

Lidar delivery check"

The project was split into two sorties and two deliveries were created. There were still issues with the full waveform due to settings based on inconsistencies with the manual (flight test in any case). The "a" delivery contains full waveform data as an example but not the "b" as this was not good data. The readme, logsheet, screenshots and everything added looks good so I am marking this as ready to be delivered and will deliver via FTP (06/10/2025)