1 October 2003
What is the funding situation?
Chose a system and methods that will allow you to cost-effectively follow
through on a project.
Do we need new or archived data?
Avoid wasting resources by soliciting imagery data that already exists. Contact
TEC Image Office (TIO) to determine image data availability and purchasing
b. Here are some ancillary decisions to be made based on answers to the above
What field of view is needed?
Specify image overlap if one image is not sufficient. Be aware that aircraft and
flight line paths control image overlap. Should either be altered then the overlap
could be negatively affected (Figure 3-1).
What acquisition look direction?
Radar imagery taken in mountainous regions can have layover distortion and
shadow regions; whereas nadir looking airborne imagery has less of that effect, so
that equal amounts of backscatter and transmission are collected on both sides of
Are commercial analytical services needed?
Will post-processing of the imagery be accomplished in-house, or does this re-
quire external expertise -- an example is the processing of radar IFSAR into ele-
vation data, which is a very special technique done by dedicated software on
dedicated hardware and not generally done in-house. Below are examples of
vendor post-processing services.