Space and Missile Tracking System (SMTS)Space-based satellite sensors for surveillance, tracking, and discrimination of enemy objects during post-boost and midcourse phases.
Space Based Infrared System (SBIRS)SBIRS will be a consolidated system that will meet United States infrared space surveillance needs through the next 2-3 decades.
Space Command Center (SPACC)A USSPACECOM center located on Peterson AFB, CO, in Building 147(1). It is the primary command facility for USSPACECOM providing USCINCSPACE with the…
Space Control OperationsOperations that provide freedom of action in space for friendly forces while, when directed, denying it to an enemy; includes the broad aspects of…
Space DefenseThe defensive aspect of space control operations which includes all active or passive measures planned or taken to defeat attacks against friendly space…
Space Defense Operations Center (SPADOC)A center in CMAFB responsible for monitoring and reporting of ASAT attacks on Blue satellites, negating designated satellites, and reconstituting and…
space diversityA method of transmission or reception, or both, in which the effects of fading are minimized by the simultaneous use of two or more physically separated…
Space Environment Forecast Center (SEFC)Center at Peterson AFB, CO that supplies terrestrial and solar weather to the CMAFB Weather Support Unit (WSU) and designated USSPACECOM units.
Space Forecast Center (SFC)Center at Falcon AFB, CO that supplies solar and space environmental warnings, analyses, and forecasts to USSPACECOM, NORAD, and DoD customers.
Space MinesDevices that can track and follow a target in orbit, with the capability of exploding on command or by pre-program to destroy the target.
Space Object Identification (SOI)Use of radar, imaging, and other collection resources to determine size, shape, ephemeris, and identity of space objects.
space operation serviceA radiocommunication service concerned exclusively with the operation of spacecraft, in particular space tracking, space telemetry and space telecommand.
Space PowerGeneration and control of electrical energy in space, from various originating sources (e.g., nuclear, chemical, solar).
space radiocommunicationAny radiocommunication involving the use of one or more space stations or the use of one or more reflecting satellites or other objects in space.
space research serviceA radiocommunication service in which spacecraft or other objects in space are used for scientific or technological research purposes. [NTIA] [RR]
space stationA station located on an object which is beyond, is intended to go beyond, or has been beyond, the major portion of the Earth's atmosphere.
space subsystemIn satellite communications, that portion of the satellite link that is in orbit.
Space Support OperationsOperations required to ensure that space control and support of terrestrial forces are maintained.
Space Surveillance (SPASUR)An operational space surveillance system with the mission to detect and determine the orbital elements of all man-made objects in orbit of the earth.
Space Surveillance Center (SSC)A center in CMAFB responsible for maintaining the satellite catalog, laser clearinghouse, collision and RFI avoidance, and Tracking and Impact Prediction…
space systemAny group of cooperating Earth stations and/or space stations employing space radiocommunication for specific purposes. [NTIA] [RR] [47CFR]
space telecommandThe use of radiocommunication for the transmission of signals to a space station to initiate, modify or terminate functions of equipment on an associated…
space telemetryThe use of telemetry for the transmission from a space station of results of measurements made in a spacecraft, including those relating to the…
space trackingDetermination of the orbit, velocity or instantaneous position of an object in space by means of radiodetermination, excluding primary radar, for the…
Space-Based Architecture Study (SBAS)A 1989 study to review the space-based elements of the Phase I SDS architecture, with emphasis on Space-Based Interceptor (SBI), Brilliant Pebbles (BP)…
Space-Based Interceptor (SBI)OBSOLETE. A distributed set of low earth orbit satellites that may provide launch detection and booster tracking, and that serve as kinetic or kinetic…
Space-Based SensorA system that provides global above-the-horizon surveillance to detect and track PBVs, object clusters (RVs and penaids ), and resolved midcourse objects…
space-division multiplexingA misnomer. Note: Space-division multiplexing has been improperly applied to the use of multiple physical transmission channels, e.g.
space-division switchingIn telephony, switching in which single transmission-path routing determination is accomplished in a switch by using a physically separated set of matrix…
spacecraftA man-made vehicle which is intended to go beyond the major portion of the Earth's atmosphere. [NTIA] [RR] [47CFR]
SpacetrackUSSPACECOM global system of radar, optical, and radiometric sensors linked to a computation and analysis center in the Space Surveillance Center.
spacing biasThe uniform lengthening of all spacing signal pulses at the expense of the pulse width of all marking signal pulses.
SpammingSee spamdexing. Spamming is also used more generally to refer to the sending of unsolicited bulk electronic mail, and the search engine use is derived…
SpamvertiseSomething is spamvertised when it is promoted (or merely appears) in spam. The term is commonly used with Web sites or email addresses that are part of…
SPARAbbreviation for single primer amplification reaction.
spareAn individual part, subassembly, or assembly supplied for the maintenance or repair of systems or equipment.
SPARQLSPARQL Protocol and RDF Query Language (pronounced âsparkleâ) is an RDF query language much like SQL is a relational DB query language.
spatial analysisThe process of modeling, examining, and interpreting model results. Spatial analysis is useful for evaluating suitability and capability, for estimating…
spatial applicationAn application requiring high spatial resolution, possibly at the expense of reduced temporal positioning accuracy, i.e., increased jerkiness.
spatial edge noiseIn a video display, that form of edge busyness that is characterized by spatially varying distortion that occurs in close proximity to the edges of…
spatial indexingA means of accelerating coverage drawing, spatial selection, and feature identification by generating feature-based indexes for one or more feature…
spatial interactionAn analytical technique that estimates the number of interactions occurring between an origin and destination locations.
spatial modelingAnalytical procedures applied with a GIS. There are three categories of spatial modeling functions that can be applied to geographic features within a…
spatial orderAn index assigned to features based on their relative closeness in two-dimensional space.
Speaker RecognitionA biometric modality that uses an individual�s speech, a feature influenced by both the physical structure of an individual's vocal tract and…
Speaker Recognition EvaluationsAn ongoing series of evaluations of speaker recognition systems. For more information, visit www.nist.gov/speech/tests/spk/index.htm.
Spear PhishingTargeting phishing attacks. Perpetrators will only target a specific group of people, or a specific person, in a highly-customized attempt at obtaining…
Special Data CommandsSpecial, non-routine commands distributed for surveillance battle management, and fire control.
special device fileThe device file name that the HP-UX operating system gives to a single connection to a node, in the format /dev/devtype/filename.
special grade access lineIn the Defense Switched Network, an access line specially conditioned, usually by providing amplitude and delay equalization, to give it characteristics…
special grade of serviceIn the Defense Switched Network, a network-provided service in which specially conditioned interswitch trunks and access lines are used to provide secure…
special information tone (SIT)A tone that comprises three precise sequential frequencies used to identify recorded announcements. [After T1.207-1998]
Special Programs CenterNational center for threat modeling and production. Located in the National Test Facility at Falcon AFB, CO.
special purpose computerA computer that is designed to operate on a restricted class of problems.
special serviceA radiocommunication service, not otherwise defined in this Section [of the Radio Regulations], carried on exclusively for specific needs of general…
special servicesAll services other than message telephones, e.g., teletypewriter exchange service (TWX), private line services. [47 CFR Pt.36-A]
Special Test Equipment (STE)Single or multipurpose integrated test units engineered, designed, fabricated, or modified to accomplish special purpose testing.
special textText that allows document-placement information from views to be automatically recalculated as a post processing step, After the column formulas in a view…
specific detectivityFor a photodetector, a figure of merit used to characterize performance, equal to the reciprocal of noise equivalent power (NEP), normalized to unit area…
specificationa written description of the invention and the manner and process of making and using the same -- see MPEP 608.01 for more
Specification LanguageA language, often a machine- processable combination of natural and formal language, used to specify the requirements, design, behavior, or other…
specification pointAn industry agreed-upon location where a set of specifications would apply, for example, the node in the originating network where specification occurs.
specificationsDocumented requirements containing the particulars with which a system or project must conform
Specified CommandA command that has a broad continuing mission and that is established and so designated by the President through the Secretary of Defense with the advice…
speckle patternIn optical systems, a field-intensity pattern produced by the mutual interference of partially coherent beams that are subject to minute temporal and…