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aofer ●ctlpee-The dscuretion of the Iiiht of
ths Sun by the Moon A eoler ecfipse is WH&rl if
tha Sun is @fy obscured: total If t@ enlim
wrface is ~ured or mrwfar ii o thin ring of
the Sun’s aurfese ~rs around the obscuring
w.
solar ●phomorf~ deity fabuteticrr of
estmruvnis poeilbtm & the Sun.
solar fomm—.%e sldor.al focus.
eolar occultation-An ooxltation of the Sun
by the Mawr.
eolsr pemllax-The angle subtended by the
equatorial radius of the Eerfh at a d~tence of
one astronomic unit (i. e., the equatorial
horizontal parellex et tha Sun).
solar mrflation prosaura-A perturbation of
high fty@ erlifiiiel satellites of Isrge dmmater.
Ths graster psrl is diractfy from the Sun, a minor
psrf is from the Eetih, whiih is usually dwkhl
info diract (reffesfd) and irrdksx Ierresrrial
(redated) radiation pressures
soler time-l. Ttme based upon the rotation
of the Ewlh relslive to the Sun. 2. Tmvs en the
Sun.
eolar tmnaft-A regular transil to whkh has
bean addad a solar attachment, which affects
the imdsntanecus mechanical solution of the
estmnomic triangle (Sun-zenith-pele) and
permits tha establishment ard surveying of the
astronomic mefidmn or estrbnomic parellel
diractly by observation.
solar year-see troplcd year.
solid ●igle-The integrated engufer spread at
the vertex
figure.
of a sons, rrvram!d, . or other aofkf
solstice-one of h points of the acliptk
fattheat from the celestial aquatoc one of fhe
two points on fhe celest”nl sphere eccupied by
the Sun at meximum declination. Also ssllsd
aolstftial point. See elso summar solstlce;
winter ●olotic*.
solstltlel colure-The hour circle through the
eolstiiae.
solstltlal point—See soletlce.
MIL-HDBK-850
235
eonar-1. (JCS) A sonic davioa used primsriby
for the Macfbrr end location a4 undanvalar
objects. 2. A system fer determining dkdew of
an underwater ~jed by maaauring the interval
of lime between transmission of an underwamr
*or ~ ~wl md return d as eCIW.
~ri tamr la dar&ad form fha wrds ‘sound
navigat”~ and ranging.”]
sonic depth firrdor-See echo eounder.
sonic navigation—See acouatic
nevlgetlon.
eotio plot-(JCS) An overiay representing the
ares on a mefr covered by imegaty taken during
one serfie. Also called photo Index.
aortle-(.fCS) In air oparstions, an eperatienel
flight by one aircrsff.
Sound Survalllance Syriteme Chsrte
(SOS fJS)-Charts which portray generalized
bslhyrnetry and othar prescribed system
oriemed infornsstion supporting Anti Submerirw
Warfare (ASW) survellkmce.
. . . . . . . . ,. . .
sounding datum-The plane to which
soundings are referred.
sounding pole-A round, wooden, 15-fool-
Img pole, used for sfmal water soundings. It is
graduated in feet and half-fast frcm the oanter
toward both ends end numbered corrsecufivefy
fmm Ihe ends towerd the center.
aoundlng—1. The measured or chmtad depth
of water. 2. A measurement of the depth of
wster expressed in fe~ or fathoms and raduosd
to the tidal datum shown in the chert title. Alse
called hydrogrephlc aorsndlng. See atso
depth; depth number. 3. In geophysics,
eny penetrf+m of Iha rrelurel envirmmersf for
●clentlflc obaarvation. See alao ●cho
sounder; echo sounding; Iced lk+; off
eoundings; on soundlnga; wlro drag.
Soumo Acqulsltlon Segment (SA/S)-
Segment of DMA’s DPS which provides the
csPsbi@ to msnege image Ibrary holdings and
to rrreintain the gsodstic confrol deta bsse. See
elso Dlgltel ProductIon System.
Source Pmperetlon Sagmont (SP/S)-
Segrnant of DMA’s DPS which provides the
m~bifify to accomplish source aeaesamant,