1 - NGA

I
beam a- the CRT face. See also raster.
raster map product (RMP)-A generic tamr
for mater scanriad tmp knagaa not fourd 10 be
in accodarma with the DMA ADFfG Spaciiiicvr
W =mn Pro9rw t%XCkIdt3S~~.s ADRG.S
(rasler aeperates).
mstor to veotor-The precaaa of converting
an image msda up of calls info ona described
by fiiae end pofygona.
taster-l. Pattern of horizontal, parallel lines
of varying inlensily forming an image (uauafly)
on a calhoda ray I* screen. 2. A regufar grid
cd calls covering an area.
rate ststlon-See drift station.
I mtlo print-A print h wh~h the scale has
bean changad from lhat et the negative by
photographic enlargement or reduction.
. . . .
ratlograph —See ratlomatar.
ratlomoter-An instrument used to help salve
the mathemal”cal relationship of a photograph
to a mosaic.’4t.detmminas Scala -ratirx’ from,,.
which, thrwugh methemctical Ierrnulas, a
rectified print csn ba meda on e pmperfy
caiibratsd rectifying printer.
rational horlzo*See calastlal horizon.
rstlonalizatlon mathod~ technique of
rekrtive orientation wfich lakes into
oonsideratirm the Iimiling faders & the
equipment tiIng used, ths nature rmd
variations of tiff and crab fmgtas at susmsaive
camera sla!ions, and providhg approximate
pmj~tor adjustments based on thesa data.
my of llght-The geometrical corcept of a
single element of Iiihi propagated in a straight
tine and d irrfhitesimvd cress aactii~ used in
arMfyiicaffy tracing tha path of light through an
optical system. See also besm of light.
ray tmclng--(optics) A trigonometric
cafculafion of the path of a tight ray through an
optical system.
Rsydlst—The tmde narna of an alectmnlc
distance measuring system. A nonline-of-sight
syatam capable ef aimutfaneous multiperfy,
ranga-range operatioty if gives cmfinuous
mwa information from fwe basa sfetions
.
MIL-HDBK-850
211
opamtirtg e.huhanacaaJy wffh ona or more
aircraft and surfecs veasek.
mat lmag*An inmge actually produced and
capable dbaingahotwr onaaudaca, as ina
camera,
raaltima meth rnodai-A set of equalione
that definse hags Oootitnetes as funcfkrns d
thma-dimerwbml object coordinate for a
region ot fmgery.
rsar ●lamont—See lane elemsrrt.
rsar nodal point—See nodal point.
racsll-(digitel) A p-urn which raatoms the
previeus entry.
resaat-lo changa a map fmm one horizontal
da!um to another by cppmprialely changing tha
gsographc values of the rnsp grclicule.
rasolver-1. (pendulum) A heavy -oest metal
box within which the pendulum is suspended
end seine auxiliary equipment plscad whan
rrmking observations for the intansfly of gravity.
2 (setetfiie surveying) The aqulpmcnt
nacaasery 10 rexive signals brosdcasl fmm the
Navy Navigat”mn Sstellhe System, including an
antenna, preamplifier, processor, oscillator,
OUIPUI device, and power systam.
raclprocal bearing—See back bearing,
defiiifion 1.
mclprocal levetlng—Trigonomefrk leveling
wherein vetl’kxd angles have %n observed at
both ends of the line to efimirmta errors.
rsclptocal obsarvatlons-Obsemations
teken backwati and forward such es vertical
angles at both termini of a Iina for trigemxrretric
Ievaling.
racipmcal vartlcaf angle-A vertical angla
measured owar a line at both ends in
trigonometric leve~mg to efiminate (at Ieasf
paflly) the effects of curvature and refmcfiorr.
Raciprscal observations mud be made as
simuffaneousfy as predicable to obviate error
caused by changing refmcfiva condiiicms.
mclaaelfy—(digifaf) A prosarfura 10 change fhe
classification of existing data.
recognition—in photointerpretation, the act of