1 - NGA

I
I
diiital devices.
amphlblouo ●ssault Iandlng modet- See
assault Isndlrra model.
amptrldromlc polrrt-A rto-t!ds or nodal point
on a dtan of co!ktal fines from witlcfr the cotidal
lines rediata.
ampttldrorrrlc rsglon-An area aurroundhtg
an amphldromic poinf in whlctr the cotidal lines
radiate from the nss-tide pohrr and progress
thrwgh all hwre of the tidal cycie.
amplltude of vlbratfon--(pendulum) The
length of the arc paeead over by a perrdubm in
movlrrg from tfs mean fxmltbn to the posltiorr of
maximum displacement.
MIL-HDBK-850
amplltude—1. The mesimum value of the
displacement of a wave or other periodii
phenomenon hum a relerenca position. 2.
Angular distana north or south of the prtrna
vertical: the am of the horizon or the angle al the
zenith between the prime verlicsl aml a vertical
circle, nmasured north or south from the prime
vertical to tha venical circle. The term Is
or current as in anabg nahvorks that use
resistance to represent mechanical bsaea,
capadtors end inductors to atore energy and
sinwlete the action ot aprirQs, etc. Stereoscopic
pbffere are examples of photogrammakic stnabg
Ine!rumanls.
analog-A form of data recording thal works on
the principle of continuous measurement, rathar
than discrete cgurtthg. For example a paper
map with ccmflnuous iinas Is analog, a computer
disPIsY9d r7MP b@rIQ meda 0! bitE (pisatS) iS
di@tel.
analyals—A methodological krvesti@bn of a
precass by a crmelstam prooedura, and its
SSPSratiOn iII10 falS\Sd units for further datelled
study.
Analytical Photogrammalrlc Ponltlortlrtg
Systsm (APPS)—A sfarao photogrammelric
WO* statiin used h! conjunction with a Point
Positbmlng Dala Baee (PPDB) for precise point
positioning. See also Point Posttlonlng Data
Base (PPDB),
nnalytlcal aarotrlarroulstiors-A ohoto-
CUslonsarity used only with reference 10 tr@es wis~ulalion procedure _(using aerial
whose centers are on the Celeslial horizon, and is photography) in whlCh the Spalial SduliOII 1S
pretiied ‘f? or ‘W,” es fhe body is rising or obtained by ownputational rwlines.
setting, reapadk’ety, and suffixed ‘N- or ‘S fo
agree with lhe declination. See also compasa analytical nadir.point trlangulatlonampllkrds;
grid amplltude; ma@neIlc Radial hiangulation performed by computational
stmplftuda; truo amplltude. routines in whch nadir points are utilized as radial
centars..
amplltude of vlbratton-(pandulurn) The
Iangfh of tha arc paased over by a pendulum in analytical orientation—Those computational
rtrovlng fmm its mean posltiin 10 the position of s;eps required 10 determine lilt, diractbn of
maximum dbplacement, principal line, fiiihl height, preparation of control
terrplets at rectilicetkrn scale, an@ar elamerrfs,
arraglyph-A sfereogram In wtrkh the fwo views and linear elements In preparing aeriat
are primed or projected suparfmposad in photographs for mdifbation. Devebped data are
rnf@errremay XMra, usually red and Blue. By mnverted to values to be set on cimles and
vmwing through fitter apactaclea of corresponding Scelas of rectifier or transforming printer.
00n@eMSmsrY cobra, a stereoscopic image is
formed. analytical phoiogrammetry— Photogrammetry
in which solutions are obtahrad by
Snslemma-1. A figure eight shaped diagram mathematical Methods.
drawn across the Torrid Zone on a terrestrial
gbbe 10 show the declination of lhe Sun analytical photography—Phof ography,
Ihmughoul fhe year and also the equation of ehher motion pk%rre or still, accomplished fo
firna, 2. A sundial. delarrnine (by qualitative, quamitatlve, or any
other maans) whelher a particular pherwmenon
●nrrlog fnetrumonts-Devices fhat repreeenl does or does nof occur.
numerical quantities by means of physical
variables, giving all vatues wlthln a particular eneffifcaf Pmducta-Products made wlfh ffte
raWe, for exampfe, by Irarralatb% by rotatbn, use of analytic fechnlquas.
as in a machanbal gear system; and by vonage
10