Parent Topic: <A href="http://www.pcigeomatics.com/cgi-bin/pcihlp/FLIGHT|PARAMETERS">PARAMETERS</a><hr>
<H4>DBGC</H4>
Specifies the database ground control point segment which contains
the GCPs which map the input SAR image on the uncorrected file
(FILE) to the elevation image (DBEC) on the master file (FILM). The
GCP segment must be on the uncorrected file (FILE). Coordinates must
be in either PIXEL units or the georeferencing units of the master
image. If DBEC is not specified, then the elevation for each GCP is
taken from the GCP segment.
<P>
<PRE>
 EASI&gt;DBGC=segment            | existing GCP segment number
</PRE>
There must be at least ORDER+2 GCPs on the GCP segment. If ORDER=1
(default value), then 4 to 6 GCPs are required for accurate results.
If DBEC is specified and there are GCPs whose coordinates are not
within the master image, then an error message is printed and the
program terminates.
<P>
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Parent Topic: <A href="http://www.pcigeomatics.com/cgi-bin/pcihlp/FLIGHT|PARAMETERS">PARAMETERS</a><br>
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