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determhre the meridian attitude.
●xmorldlan observation-Measurement of
the attitude ot a celestial body near the celestial
merfdian of the obsenfer, tor conversion lo a
meridan altitude; or the altiiude ao measured,
●xperfence radar predlcllon—Tfr e
determination of size, shape, and relative
intensity of radar returns and a determination of
radar shadow and nc-retum araas based
prtmartty on the radar knowledge and
experience of the individual making the
prediction rather Ihan on proven formulas,
power tables, or graphs. Also called artwork
prediction.
MIL-HDBK-850
experimental map—A sample of a new map
product prepared either 10 obfain user approval
of the adequacy of rmntenl and symbolization or
to dkclose any problems which may occur in the
various production stages. Also called
prototype. See also pilot ahael.
eXXpt~~O~ll-The difference belween an angle
exfMoltatlon—The process ,of. obtaining usable
data lrom imagery.
exploratory survey-A survey executed for
the purpose of obtaining general Information
Corcernhrg areas about which such inlormalion
Is not a maner of record,
exposure Interval-The time required
behveen successive ex~sures of a series of
photographs for the purpose ot obtaining
dasirad forward lap.
exposure etatlon—See alr etatlon.