1 - NGA

1
1
,
,
I
I
maefer etatlon-Thai station in a given
system of transmitting stations that controls the
transmissions of the other stations (the slave
stations) and maintains tha lime relationship
befweenthe pulses of tha stations. Insatelliie
surveys, positions can be upgraded
mttsiderabfy by trenslocation. See also
tranalocatlon.
match Unee-tl aerfesot grease pencil lines
drawn ona photograph, radiating horn the torn
edges of lhe print onfolfsa adjacent areas to
serve as a registration guide when laying the
individual prfrrf In tha moaalc.
match strlp+S.ee tlo srtrlp, detinilion 1.
matching—The act by which detail or
lntormalbn on the edge, or overlap araa, of a
map or chart k compared, adjusted, and
ccwrecled to agree wilh the exisling overlapping
chart. Also called edge matching.
MIL-HDBK-850
matrix dam-Data which consists oi a matrix
of evenly spaced rows and columns of data
points. The position within the rows and columns
represents the geographic position, while (he
data point is the value 01 some spatial variable
al Ihal posfiion., An example is DTED, which
provides elevations al nominal 100 meter
horizontal intervals.
Snatte print—Prim made on pholographtc
paper with a dull finish which Is more suitable Ior
pencil or ink annotations than a gfossy print.
maximum elevaflon figure—(JCS) A figure,
shown in aach quadrangle bounded by ticked
graficule fines on aeronautical charts, which
represents the height in thousands and
hundreds of feel, abova mean sea level, of the
highest known natural or man-made feature in
that quadrangle, plus suitable factors 10 allow for
Inaccuracy and incompleteness of fhe
topographical heighting information.
MC&G utlllty software environment
(MUSE)-Software programs which perform
general purpose operations on Mapping,
Charting & Geodetic (MC&G) data that are
applicable to a broad range of eys!ems and
usara rather than a single, special purpose.
Some examples Includa datum and projection
transformafkxrs, coordinate conversions, and
symbol libraries.
mean anomaly—See anomaly, definition 3.
158
mean center of Moors-1. A central point
for a lunar coordinate system. 2. The pint on
the lunar surface intersected by the lunar radius
that is directed toward the Earths tamer when
the Moon is al the mean ascendiW node and
when the node coincides with the mean perigee
or mean apogee.
mean charf-Any chart on which Ieopleths of
the maan vaiua 01 a given oceartogrephk
element ara drawn. Also called mean map.
maan deviation—See averaoe devlallon.
maan dlatance—See aemlmajor axla.
mean dlurnel high water Inequalliy
(DHQ)—Half the average dflerence between
the heights of the two high watara of each tidal
day over a 19-year pariod, or a computed
equivalent period, obtained by subtracting the
maan of all high waters from the mean of the
higher high wafers.
mean diurnal fow water Inequellty
(DLO)—Hail the average difference between
the heights of the two low waters of each t’kfal
day over a 19-year perbd~or a computed
equivalent period, obtained try aubtracfkrg tha
mean 01 Ihe lower bw waters from the mean 01
all low waters.
mean equinox of date—See mean
equinox.
mean equinox—A fictitious equinox whose
poailion is thal of the vernal equinox at a
particular date with the effect of nutafiin
removed. Also called mean equinox of
date.
mean error—The algabraic maan of all errors
derived by comparing observed or computed
quantifies wilh all fixed values of common
dimensional parameters in an integral
observation system or mmputalion modef, A
mean error