Specim sync errors

[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.

[mggr]

Asked Bill for azspec 1.1.3 on 20/Sept.

Asked again in a phone conversation a week or so later (date not recorded).

In both instances, he was sorting out IPY data and his tax return :)

Asked again on 10/Oct, just before he went on holiday.

[mggr]

Asked again ~Nov 20 when Bill asked what if anything was currently delaying us - he's probably working on the calibration issue currently.

[mggr]

Fixed by info from Bill in Dec 2007. The option was renamed to hide it - now partially documented in Processing/Flow/azspec. Procedure is otherwise as described in azspec processing supplement.