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Ticket Resolution Summary Owner Reporter
#73 fixed Specim sync errors mggr mggr

Many 2007 flight lines have problems with navigation sync (ie. they don't sync!). This appears to be due to missing sync messages in the .nav file, or a totally missing .nav file. A typical error looks like:

azimport  -- ver: 2.2.10 May  7 2007   (C) Azimuth Systems UK 1996, 2007

File template for Specim sync is: hawk/SWIRsh2007130#.nav

Site time limits - day: 130  start: 94341  end: 94609
date: 10 05 2007 jday: 130 utc2gps: 14.0
NAV vgroup exists - updating
Specim navigation sync details from image file header.....
   image lines: 2901 approximate sync time: 35021.46880 (gps SoD) frame inc: 0.05000 secs
   sensor: Hawk frame rate: 20.00 fps  no. of frames to correct for: 3.00
sync time: 35021.5 is NOT on Applanix POSATT file: hawk/SWIRsh2007130a-1.nav start: 35182.8  end: 35403.5
sync time: 35021.5 is NOT on Applanix POSATT file: hawk/SWIRsh2007130a-2.nav start: 35421.1  end: 35565.1
sync time: 35021.5 is NOT on Applanix POSATT file: hawk/SWIRsh2007130a-3.nav start: 35752.3  end: 35869.1
sync time: 35021.5 is NOT on Applanix POSATT file: hawk/SWIRsh2007130a-4.nav start: 36085.1  end: 36243.4

** NO Specim SYNC found after checking all files
** check file template and directory contents - no data saved

A procedure to correct for this is outlined in the specim processing guide but appears only to apply to azspec 1.1.3. We have azspec 1.1.2.

#74 fixed Support: 16/Oct/2007, Rachel Gaulton/Tim Malthus, GB06/05 benj mggr

Rachel contacted us with a problem relating to radiometric calibration.

I'm not sure who specifically is the best person to ask about this,
but I am having some problems with the AISA Eagle data recently
delivered for my sites (Clocaenog and Glasfynydd, acquired July 06).
The radiance values differ considerably to those of the CASI and ATM
data acquired at the same time, specifically they are much lower
(about 1/2 to 2/3) in the Eagle data (see attached spectra of a paved
area in Glasfynydd for an example).  Following attempts at atmospheric
correction, this results in significantly lower reflectance than is
expected based on ground spectra.  I  may be missing something obvious
(e.g. different units), or is this down to errors in the radiometric
calibration of the Eagle sensor?
#75 fixed Acquire 2008 radiometric calibration mggr mggr

We need copies of the ATM, CASI, Eagle and Hawk calibration files as soon as possible in the year.

The expectation is that Chris MacLellan of FSF is going to calibrate the CASI (and Specim?) early Dec 2007.

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