Page:Glossary of NPIC Terminology (1965).pdf/16

Rh salvo -— The bombing system which involves the release of the entire bomb load or re— maining bomb load of more than one bomb as instantaneously as possible. This system results in the minimum bomb impact inter- val in a target area.

scale -— The ratio of a distance measured on a map, photograph, mosaic, etc., to the cor— responding diStance on the ground. Scales of air photography are classified as follows:

Very large 1:4,000 and larger Large 1:6,000 to 1:12,000 Medium 1:12,000 to l:30,000 Small 1:30,000 to 1:70, 000 Very small 1:70, 000 and smaller

scan -- A careful viewing of the photography (imagery) from a mission in order to re- port information on known targets and on new targets of significance.

scan line -— An image line corresponding to l revolution of a single plane mirror. A4— sided mirror system will create 4 scan lines on the resultant imagery duringa single revolution. (infrared)

scattered cloud cover (SC) —~ Clouds cover some portions of a target area.

search —- A comprehensive examination of all photography (imagery) covering a specific type of target(s ) within a designated geograph- ic area and time frame.

sea wall -- A wall or embankment built along- shore to resist the sea.

secondary explosion —— An explosion caused bya bomb detonation producing a pronounced, usually larger explosion of explosive material on the surface. Examples of such material are stores of ammunition, fuel, chemicals, and pressure—operated equipment.

second-phase report -- A report based on a scan of all the photography from a given mission or missions and providing an organ- ized, comprehensive list and/or brief de—

scriptions of intelligence targets imaged on the photography. (Second-phase reports pro- duced by NPIC are the Brief and Summary Ple.)

section -- A distinct part of an area that ac— complishes a part of the area's function or serves the area in some other way, e.g., in- dustrial section of Area A, and in missiles terminology the technical section of a site support facility.

select -- The bombing system which involves the release of only a single bomb on a given bomb run, from an aircraft loaded with more than 1 bomb. The British equivalent of this term is "single."

semidarkness (SD) -- Insufficient illumination limits interpretation of a target.

severity of damage —— Aclassification of damage related to the degree a structure is made inoperative, unserviceable, nonproductive, or uninhabitable, but established primarily through consideration of the comparative ease of repair. (damage assessment)

short range ballistic missile (SRBM) -— An arbitrary designation for missiles having ranges up to 500 nautical miles.

signature -- That physical feature or pattern of physical features by which a target can be recognized on photography.

site —— The place actually occupied, previously occupied, or to be occupied by a target. See launch ite.

Situation Summary (SITSUM) -- A first-phase photographic interpretation report presenting the results of the initial scan and analysis of new photography in answer to specific re- quirements on the highest priority targets but containing no reference to photographic sources.

small scale (SS) -— A restricting term used to indicate that the scale of the photography is smaller than the minimum which is