Difference between revisions of "Angular Distance"
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Revision as of 08:33, 24 March 2007
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Angular Distance
1. The angular difference between two directions, numerically
equal to the angle between two lines extending in the given directions.
2. The arc of the great circle joining two points, expressed
in angular units.
3. Distance between two points, expressed in wave lengths
at a specified frequency.
It is equal to the number of waves between
the points multiplied by Missing Image:IMG SRC="equat/2pi.gif" WIDTH=21 HEIGHT=13 "two pi"
if expressed in radians, or multiplied
by 360° if measured in degrees.
References
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use
