Changes between Version 19 and Version 20 of Procedures/OwlProcessing

Timestamp:

Dec 9, 2015, 3:31:40 PM (9 years ago)

Author:

lah

Comment:

--

Procedures/OwlProcessing

@@ -2 +2 @@
 
 The Owl thermal hyperspectral sensor is new to the arsf and so new problems may occur during processing.  Please add any new issues to the bottom of this wiki. Details on the Owl sensor are available [https://arsf-dan.nerc.ac.uk/trac/wiki/Sensors/Owl here] and information on Owl testing is available [https://rsg.pml.ac.uk/intranet/trac/wiki/Projects/ARSF-DAN/Users/lah/OwlNotes here].
+
+== Owl Pre-Processing Checks==
+
+Before processing, or as part of unpacking, the following checks are recommended:
+
+1) Check for dark frames. From the top level directory run:
+
+grep -rnw */*/thermal/owl/*/capture/*.hdr -e "autodarkstartline"
+
+Data cannot be processed without this keyword, so ensure that it is listed for each flightline. If dark frames are missing they can be added following instructions in the Dark Frames section.
+
+2) Check for nav synchronisation:
+
+grep -rnw thermal/owl/*/capture/*.hdr -e "GPS"
+
+If there are no GPS times in the data header, the data cannot be geocorrected.
+
+3) Check for calibration data:
+
+ls thermal/owl/*/capture/T1*
+ls thermal/owl/*/capture/T2*
+
+Make sure that there is at least 1 T1 and 1 T2 file present for the flight and that it is located in the same directory as the flight data. If there are double the number of expected flightlines, then the calibration data is probably stored in separate directories from the flight data. It will need moving to be processed. e.g. if line 1 only has T1 and T2 files and line 2 has data, but no T1 and T2, move/copy line 1 data into line2.
+
+4) Check for dropped frames in the .log files. If there are more than a few note on the ticket. Make sure the log file is in the same layout as 2014 288 before starting processing.
+
+5) Check the files and directories are correctly named.
 
 == File Naming ==