radarAcronym for RAdio Detection And Ranging; a radio device or system for locating an object by means of ultrahigh-frequency radio waves reflected from the…
Radar BeaconA receiver-transmitter combination which sends out a coded signal when triggered by the proper type of pulse, enabling determination of range and bearing…
RADHAZ(1) Electromagnetic Radiation Hazard. (2) Hazards form electromagnetic radiation.
Radiant ExposureThe total amount of thermal radiation energy received per unit area of exposed surface; it is usually expressed in calories per square centimeter. 242
Radiation(RAY-dee-AY-shun) Energy released in the form of particle or electromagnetic waves.
Radiation HardeningProtection of a particular system, subsystem, or component from functional damage due to the effects of nuclear (or other) radiation by shielding the…
RADIC SystemRapidly Deployable Integrated Command and Control System.
Radio Blackout (RBO)The complete disruption of radio (or radar) signal over large areas caused by the ionization accompanying a high altitude nuclear explosion, especially…
Radioactive (or Nuclear) CloudAn all-inclusive term for the volume of hot gases, smoke, dust, and other particulate matter from the nuclear weapon itself and from its environment, that…
RadioactivityThe spontaneous decay of disintegration of an unstable atomic nucleus accompanied by the emission of radiation.
Random DefenseEngagement of RVs uniformly without any reference to type or destination. This implies taking the best shot possible in terms of increasing probability to…
Range ResolutionThe ability of the radar to distinguish two targets along the same radial but at different ranges. it is approximately ½ the pulse length.
RAPTORA bird of prey such as a falcon, hawk, or eagle.
RAPTOR/TALONA technology demonstration program to demonstrate critical technologies for an unmanned airborne weapons system providing a boost phase intercept…
RationalizationAny action that increases the effectiveness of allied forces through more efficient or effective use of defense resources committed to the alliance.
RDT&E Program CategoriesThe five divisions the comprise Major Force Program 06 (R&D) in the FYDP. They are: • 6.1 Basic Research • 6.2 Exploratory Development • 6.
Re TargetingThe ability of the system to recomputed the direction of sensors and/or weapons to intercept a target that was missed on the first attempt, or that was…
Reaction DecoyA decoy deployed only upon warning or suspicion of imminent attack.
Readiness PosturesA specific status defining the relative responsiveness of BMD assets and personnel to perform a USSPACECOM BMD mission.
Real TimeWhen an event is reported as it happens - such as a quick jump in a stock's price or the constantly changing numbers on a market index - you are getting…
Real Time (R-T)1. Pertaining to the timelines of data or information which have been delayed only by the time required for electronic communication.
Real World DataData derived from physical experimentation concerning phenomenology associated with technical functioning of SDS, particularly regarding target…
Real World Data CollectionThe provision, to SEIC users, of access to real world data, in fashion timely and otherwise suitable to meet users needs (e.g.
ReconciliationThe process of analyzing two related records and, if differences exist between them, finding the cause and bringing the two records into agreement.
ReconstituteTo restore, during periods of hostile engagements or during peacetime, military forces or elements as closely as possible to a desired state of readiness…
Red/Blue ExchangeA process to identify and define potential countermeasures that would degrade aspects of ballistic missile defense.
REDCAPReal-time Electromagnetic Digitally Controlled Analyzer and Processor (USAF term).
RedoutThe degradation of infrared sensor resolution due to high-altitude nuclear bursts.
RedundancyThe inclusion of duplicate or alternate system elements to improve operational reliability by ensuring continued operation in the event that a primary…
ReengineeringThe process of examining, altering, and re-implementing an existing computer system to reconstitute it in a new form.
ReentryThe return of objects originally launched from earth, into the atmosphere.
Reentry AngleElevation angle of velocity vector relative to local horizontal plane when reentering object reaches 92km.
Reentry PhaseThat portion of the trajectory of a ballistic missile or space vehicle where there is a significant interaction of the vehicle and the earths atmosphere.
Reentry Vehicle (RV)(1) Reentry vehicles are objects containing nuclear warheads. They are released from the last stage of a booster rocket or from a post-boost vehicle early…
Regional Defense System (RDS)That portion of the SDS that provides defense for a specific geographic region, such as the European Theater.
Regional Operations Center (ROC)A group of fixed and/or mobile centers with OPCON over allocated ground based sensors and weapons. 246
RegradeTo determine that certain classified information requires, in the interests of national security, a higher or lower degree of protection against…