Earth Imaging Glossary
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OBLIQUE
An image taken with a camera or sensor with the axis intentionally directed between the
vertical and horizontal planes. A high oblique image includes the horizon in the field of view,
while a low oblique shows only the Earth's surface.
ONC--Operational Navigation Chart
The ONC series covers most of the world landmass areas at 1:1,000,000 scale. At this scale it
takes 62 charts to cover the conterminous United States. Information on these charts includes
cities and landmarks, drainage, and relief (shown by shading and contours). International and
State boundaries are shown, but not county boundaries.
ORACLE
Headquartered in Redwood Shores, California, Oracle provides relational database products,
development tools, and client/server applications.
For more information, see the Oracle homepage.
ORNL--Oak Ridge National Laboratory
ORNL, under the Department of Energy's Environmental Science Division and host to the
Carbon Dioxide Information Analysis Center, is located in Oak Ridge, Tennessee.
Approximately 15,000 research scientists are working on projects sponsored by the
Department of Energy, Environmental Protection Agency, Federal Regulatory Commission,
and other Government offices. Research activities focus on the variety of unique aspects
relating to global change and energy concerns.
ORTHO-CORRECTION
Correction applied to satellite imagery to account for terrain-induced distortion.
OVERSHOOT
That portion of an arc (line) digitized past its intersection with another arc. See dangling arc.
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Glossary Home
Initial content for this Glossary of terms has been graciously supplied by RADARSAT International - www.rsi.ca
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