Hello Netters:
If I have a TM image of Yellowstone Nat'l Park made at 17:40 Greenwich
time on August 2, 1989, how can I calculate the sun's altitude and azimuth?
I want to split the image into well-lighted and shaded areas in order to
get a better image classification of burn severity. I know the center of
the image, and that it was made at 11:40 AM local time (I think).
Can anyone point me in the right direction (grin)?
Thanks,
I recommend that you contact Dr. David Knowles in the Dept. of Civil Eng.
here at the U. of Arkansas (501) 575-3403. He has developed a software
program for professional surveyors that calculates the position of the
sun for determining True North. The input that is required is lat/lon
of position, date, and UTC time.
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Phillip L. Chaney Center for Advanced
Research Specialist * * Spatial Technologies
* * /\ /\ /\
CAST/NCRI-SW --------/--\--------
University of Arkansas ____ / \/ \/ \
Phone: (501) 575-4575 /\ National Center for
E-mail: phil@spock.uark.edu / \ Resource Innovations
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