Opened 6 years ago
Last modified 6 years ago
#632 closed flight processing
CEH18/16, flight day 177b/2018, Monks Wood — at Version 22
Reported by: | dac | Owned by: | |
---|---|---|---|
Priority: | whenever | Milestone: | |
Component: | Processing: general | Keywords: | |
Cc: | Other processors: |
Description (last modified by dac)
Data location: ~arsf/arsf_data/2018/flight_data/uk/CEH18_16-2018_177b_Monks_Wood
Data arrived from NERC-ARF hard drive on 13/07/2018
Scientific objective: Flight over Monks Wood
Priority: Unknown
PI: France Gerard
BAS Project Code: C016
The following issues were identified during unpacking
- Owl data missing GPS start time.
Sensors:
- Fenix (flown, required)
- OWL (not flown, required)
- Phase One (flown, required)
Change History (22)
comment:1 Changed 6 years ago by wja
comment:2 Changed 6 years ago by wja
Navigation Processing
Basestation PPP:
Latitude | 52°11'07.33076" |
Longitude | -0°06'44.96865" |
Ellipsoid Height | 120.209m |
This is using the St. Neots OS basestation (SNEO), however these PPP results are considerably different (minutes) to the ones generated for flight 2018 129 (ticket #628) which also uses this basestation. Will look into why this is so different.
comment:3 Changed 6 years ago by wja
Navigation Processing
The above basestation PPPs are close to the basestation location recorded in the RINEX header. Will continue processing using these values.
comment:4 Changed 6 years ago by dac
Digital Camera Processing
Converted raw images to tiffs.
comment:5 Changed 6 years ago by dac
- Description modified (diff)
comment:6 Changed 6 years ago by dac
Hyperspectral Processing
Starting hyperspectral processing using .sol file Mark generated.
comment:7 Changed 6 years ago by wja
Owl Processing
Starting owl processing.
First looks:
-20 flightlines.
-Darkframes are not recorded in the data. DARKREF.raw data exists for all flightlines apart from 3.
-T1 calibration data missing for flightlines 3, 8 and 9.
-T2 calibration data only present for flightlines 1, 2 and 4.
-No navigation synchronisation.
-The following flightlines each have 1 dropped frame recorded in their log files: 2, 4, 9, 10, 13, 14, 19.
comment:8 Changed 6 years ago by dac
Hyperspectral Processing
Using sol file created with basestation produced files with lots of geolocation problems (wobbly, wrong location, twisted in parts). After lots of work on trying to process with basestation used PPP processing for aircraft GPS. Fenix files processed well with this. Found SCT values:
Flightline | FENIX |
1 | 2 |
2 | 2 |
3 | 1 |
4 | 37.04 |
5 | 2 |
6 | 2 |
Mapping all bands.
comment:9 Changed 6 years ago by wja
Navigation Processing
Reprocessed using the Peterborough (PETE) OS basestation. Here are the PPP results.
Basestation PPP:
Latitude 52°35'01.53701"
Longitude -0°15'47.43300"
Ellipsoid Height 72.841m
*.sol file generated using this basestation and has been moved to /posatt/ipas20/basestation_PETE.
Analysis looks okay, only area of potential concern is Solution Analysis peaks exceed ±0.05 but do not go beyond ±0.1.
comment:10 Changed 6 years ago by dac
Hyperspectral Processing
Reprocessed using .sol file created using basestation. Geolocation looks good. Creating delivery.
comment:11 Changed 6 years ago by dac
Hyperspectral Processing
Generated delivery. Waiting for delivery check.
comment:12 Changed 6 years ago by dac
Hyperspectral Processing
Line 4 had a problem with time in navigation going backwards. Processed using use_nav = false and did manual SCT correction. Found value to be 37.04 (table above updated).
Moved files to existing delivery. Ready for checking.
comment:13 Changed 6 years ago by wja
Hyperspectral Delivery Check
Logsheet plot of flightlines is missing flightline 4. Otherwise all looks good.
comment:14 Changed 6 years ago by dac
Hyperspectral Delivery
Fixed logsheet. Started zipping mapped files.
comment:15 Changed 6 years ago by wja
Hyperspectral Delivery Sent
Delivery via FTP 4. Notification e-mail sent to PI.
comment:16 Changed 6 years ago by dac
Owl data
Owl lines were copy of data from 177a. Marking as blocked until data for this flight are received from ops.
comment:17 Changed 6 years ago by dac
Digital Camera
Offset between creation time and GPS of 7287 seconds found for 178 also works for this flight. Tagging photos using this.
comment:18 Changed 6 years ago by dac
Digital Camera
Generated delivery. Ready for checking.
comment:19 Changed 6 years ago by wja
Digital Camera Delivery Check
Read_Me correctly mentions that photographs 1-3 & 254 do not have GPS metadata tagged, although EXIFtool sample output is of photo 1. May need changing to include GPS related fields if deemed necessary.
Delivery otherwise looks ready to deliver.
comment:20 Changed 6 years ago by dac
Digital Camera
Removed photographs without GPS, renumbered and remade Readme.
comment:21 Changed 6 years ago by dac
Digital Camera
Data delivered to PI via FTP (slot 4).
comment:22 Changed 6 years ago by dac
- Description modified (diff)
Owl
Owl failed during flight and no data were collected.
Navigation Processing
Navigation processing under way.