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ettrtbuto tagging-The process of assigning
an attrfbufe to a particular feature.
attrfbuto valua-A specific quelity of quamity
assigned to an attribute.
atfrlbut.-A characteriatii of a site or
phenomenon. May be physical, ~Cktl. economic
or tttutar h nature. For exarrrpfe, road types and
mad names are road attrttwlee.
aUglllanliillOn corr~ctlon-A ~rfe~~n due
to augmamatbn, particularly tfsat sextant aftitude
CWWdOff de to the epparem fncreaee In the
semHiamatar of a cakrstlssl body aa Its SNduda
Increases.
augmentation—The apparent Increase in the
sem”kiiametar of an asimuth celestial body as iis
attitude InCreases, due 10 the reduced dlsta~
hem the obsewer. The term is used principally in
reference 10 the Moon.
auarnontlng fBctor-A tacfor used In
I+NV’Wflen wtth the harmonic enatysis Of tides or
tldSl currents to alfOw for the difference beWeen
the times of frourly tabulation and Ins
corresponding ccmatituem hours,
Australian National apherold-A reterence
spheroid travlna the tolbwino dimensions:
I Stimimajor axi&6,378, 160.ti meters; and a
tiattening or eltiptictty 01 1/298.25.
aUetrel-Of or pertaining to south.
authallc (eoual-araa) latituda-A Ia!llude
based on a ~ara hating the same area as the
apherold, and aucfr that areas between
auccesshre parallels of latitude are exactly equal
to the corresponding areas on the spheroid,
Authaik Iatltudea are used In the computation of
ecfual-araa map projections.
❑uthallc map projection-An equal-area
-P proiecfkm.
auto reflection-The focusing of an
aufocollhrrating thaodolile on the surface of the
mirror or prism rather than focused at infinity. The
Irnqe aaan is on the lace of the refleclor end
the gauss fma~ wIII follow the rndbn of the
ratide. Whereas, In autocollimatlon, the
instrument is focused at Infinity and the gauss
Image movaa In o~sile diracflons to the
reticule.
MIL-HDBK-850
snrtocolllmatlon-( surveying) The procedure
used to dalerrnine or transfer azhruth to an
instrument or devke. This procedure raquims use
of a epacialiy edapted telescope, capable of
bisecting the real image of its own mtkde as
reflected fmm a mirror or Porro prism. When such
bwuiort la accsmspiishad, the line of sight of the
tele~pa ,b parparxjicular to the face of the
mirror or apax adge of the prism.
autocolllmator-A callimetor provided wish a
means of Ilturninatlng tts woes tsalra so that,
when a reflecting plane Lsplaced normal to the
ernargam Iighf beam, the reflected image of the
cross hssheappears to be @incidenf whh the
cross haira themselves. This devise Is used in
calibrating optical at’d mechanical inStrWtSntS
and transferring direction,
srutofocue ractiIier-A precise, venical
photoerdarger whch permits the correction o!
diatoflbn in an aerial negatiie caused by titt. The
instrument’s operationa are motor drtvwn and are
interconnected by mechanical linkages to hssura
automatically maimained sharp tocua.
Automated Alr Facllltlesr Intormatlon File
(AAFIF)+mputer file of structured
information defintng validated attributes relalive
to Iaciiiiies tor each airfield o! concern 10 DoD
flight operations.
Automated Mapping / Facllltles
Management (AM/FM)-A computer aided
mapping system whkh stores annotatbn and
iimiled attribule data. AM/FM systems are
commonly used by the utility irslustries and
municipaiilias.
Automated Tectlcal Target Graphic
(A?TG)-A Iactkal target materiafs item whkh
provides aarfal photographic coverage of a target
and a limited araa surrounding n at a scale
permitting optimum identifbatiin 01 tsroet detail.
Tha ATTG also includas taxtual Inteil!genca on a
shaet separate fmm tha graphic portion. Each
pan can be revised indepanderrl 0! the other.
AITG’s cover single targets and are p+oducad in
two forms: a lithographic sheet and a
miniaturized version in an aperture card.
automated Impoeltlon machlna-(miso,
mlsomax] A step and repeat machhre used to
expose multiple images onto either e printing
plate or sheet of film.
Automatic Digital Annotation System
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