SDI Operator's Manual
Revised July 2000

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Navigation

GVAR navigation is filed in the McIDAS SYSNAV file format. The SDI Event System is configured to execute /usr/local/bin/sysnav.sh at the start of a new image. This program reads the navigation information from the current image and files navigation if any of the following conditions are true:

• this is the first image of a new day
• the navigation in the current image differs from the navigation of the most recently filed navigation

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