1 - NGA

MIL-HDBK-850
1. R4D-(Raady for L%tributii) A term referring to
printed MC&G products rmdy to be distributed
to the customer.
R4R-(Ra.ady for Reproduction) A term rafsrring
to raprmductii rmkial reedy to be printed.
radar ●ftlmetw-An instmmant used for
determining aircraft ffying height above terrain
by meaaurarnant of time Inta+vala between
emiaakxr and relum Of elacfromagnatic pulses.
radar hltltu~llre alt~ude cd en aircraft or
s+acacrafl as determined by a radar alfima!ec
thus, the actual distance from rhe nearest
terrain feature.
radar chrwf-A chart intended primarily for use
with radar, or one suitable for this purpose.
molar clutter-(JCS) Unwanted signals,
echoes, or images on the face of the display
ttbe which interfere with cbaarvetion of desired
signals. ‘ ““”
rsder correlation-The process of
electronically relating raattime radar images with
amrad digital data on the radar refladance and
pasifiorr of terrain and features on the Earth’s
surface. It is used to pmv’k3a positioning
information to cerracf or check air navigation
and guidance systems.
radar coverag~JCS) The fimits within
ti!ch objects can be detected by one or more
mder stations.
radar fix oolnt (RFP)-The most significant
-..:. .raoarscopa
grourro raarura tor a gnfen
geographic area. The faattaw rrmy be radar
reflective or ccwrrpleiely void of raflactivii to
show cc+ttraaf with the surrounding area: e.g.,
ferrdwater w ahcrwlrro show. Posit”kmirrg data
estabfiehad for RFPs are used in offeat aiming
procedures or for anmuta and final update of
navigation systama.
radar horizon-(JCS) The lams of pints at
which the rays fmm a radar antarrna become
tangential 10 the aarth’s surface. On the open
sea this Iccua Lehorizontal but on land ii varias
according to the topographical features of the
tarrain.
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radar Intelligence ftom-A feature which is
radar aignifiint but wlkh cannot be identified
ezectly at the moment of its appearance ea
homogarraous.
radar Intalllgmco map (RIM)-A n
intermediate ekrmarrf in lha pmcaaa of lightopticd
radar airrru!atian and in fha pmducfion d
anafyiiil predictions.
radar map-A map pmducad through th6
a@iition of radar techniques.
radar photography-A cornbkretion of the
pfrotagraphic pmcaaa and radar techniques.
Electrical impulaas are sent out in
predetermined diracfiins and the reflected or
returned rays are ufilizad to present images on
cathode-ray tubaa. Phalographs are then taken
of tha information d=played on the tkae.
radar prediction cntogorlas—in fhe
bmadesl sense, radar prediction is saparmad
into-two major categories, ‘axperierme pradiiion
and analytical prediction.
radar pradictlon tormats—Radar
pradiiliorm appear in a wde variaty of formats,
ganerally indicative of irrtarrdad appliit”krn. The
four most common formats are spot
predictions: strip Dredict”kxrs; radar intelligence
maps (RIM); and Series 200 Atr Target Charts.
radar pradlctlon typas-Eech mapr radar
prediction categay is dwided into three types of
pradkf”mna: single heading ~ediiiorrs:
omnidkectional pradictionq and omnigain
pradiitiorrs.
rsdsr r@connalaaanca-(JCS) Reconnaissanoa
by means o# radar to obtain
infomratkm, on enemy acftilfy and to determine
tha nature of tarrain.
radar raflactivfty plata-A scaled, threadimenslonal
madel of e large! area cxxrafructad
of radar reflective materials on a transparent
plastic pfate, used in a radar trainer to simulate
Iha radar returns of that araa. Alaa dad radar
simulation plate; radar trainer pleta.
radar reflector-A device capable of or
intended for reflecting radar signals.