1 - NGA

protrlslonal ediflort-A map or chart printad
and dsvbutad for krpomry use with the
fxwiao Ihrd it Wil letw be Superseded h
died prollmina~ adftlon.
proviolond map-Any nonoffiiisl map,
pheto, or other material which is used as a map.
H mey vary from a hlghfy accurate captured
enemy map, which has not bean sanctioned for
uaa, to a hsatify made dmwfng or sketch. n is
uaudfy a hsstify made lie map bsaed on eerial
phofogmphs, used as a map aubstifule.
pmxlmlty wtelyaia-Analytical !echnqu.s
used to dalemrina the reletiontip bahvaan a
qxrcified point and its naigFbcva.
pmxlmlfy aaerch-h analytical procedure 10
identify occurrences of pradefined data
efemants in the neighborhecd of a Aected
fmint.
proxlmlty-A measure of closeness to a
specified point es dafined by a user.
paaudoscoplc stereo-A three-dimensional
impfe~~n, d, m~~f Wftkh k the reverse of that
actuslly ex=tmg hen Ihe posiliins of a stereo
pair of photographs are interchanged. Also
called inverted stereo: reverse stereo.
See also false stereo.
publication acele-See raproductlon
scale.
Pulkovo 1942 datum-The geodetic datum
defined et Pulkovo Observatory, U.S.S.R. using
the Kraaevsky ellipseid.
pull up-sac selectlon overlay.
pulso Oopplar mep matching (POMM)—
An image rrdching sonc+ employing a pulse
Ooppfar mapping tachnque to locate three
preselected unique edges within the terrain
scerra viewed prior to reanlry of the vehicle.
Edges are defined by differeffiw in mder
reflectance. Range and mnge rate data are
ob4einad from a small elemental area of the
ten’sin lllumitWed by the antenna beam apet
durfrrg a fbt action. A rangdmnge rate map of
the spot area is then oc.rrehxted agsins! a
reference map of the particular edge to provide
e range end vefocii update to the onbesrd
vahcle Inertisl measurement unit (IMU). Three
such aucceasive fm corretat’kms are exacufed 10
enable a trilatem!ion eolution of the vehcla’s
MI L-HDBK-850
205
peeifiin relative to the farga+ scans by the
aanaor’a cxunpufer. Tharafore, the IMU can
cakxfete a cxwracftie manawar prior to }@Cf.
PYfJmY meter—A small cup ~ currant mater
tor usa in totv vabchy maaxwwnarrte m afmflow
StM8MS. ~b M8t= & llsad in ~jUtlCtiOfl with
wsding rode onfy.
Pythagorean right-englo lnvarsor— A
a@fe dfrvic8 whiih provides a nrachankal
selutien for tinner end angular alemenfs of
mcfifiition, thus parrnifthg any enfargar to be
msda autofocusing provided nagetkva, lane, and
aaaal pfenaa era psmtld.
PZS trlangla-see ●etronomlc triangle.
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