Cat 6 (Usually measured in terms of inaccuracy) is the maximum deviation, positive or negative, of an indicated value from an accepted standard or true value.

Function to prevent undesirable "aircraft" and missile motions or structural loads by autonomously processing outputs from multiple sensors and then providing necessary preventive commands to effect automatic control.

Cat 8 A minimum (single) element of the solid state array which has a photoelectric transfer function when exposed to light (electromagnetic) radiation.

ML 7 Any modification or selection (such as altering purity, shelf life, virulence, dissemination characteristics, or resistance to UV radiation) designed to increase the effectiveness in producing casualties in humans or animals, degrading equipment or damaging crops or the environment.

A control system that adjusts the response from conditions detected during the operation (Reference: ISO 2806-1980).

Substances used in explosive formulations to improve their properties.

Cat 7 & 9 A fixed wing, swivel wing, rotary wing (helicopter), tilt rotor or tilt-

ML 8, 9 & 10 wing airborne vehicle.

"ATM" is equivalent to "Asynchronous transfer mode".

A processing technique that automatically determines and provides as output an extrapolated value of the most probable position of the target in real time.

An accelerometer output when no acceleration is applied.

Enzymes for specific chemical or biochemical reactions or other biological compounds which bind to and accelerate the degradation of CW agents.

Biological macromolecules as follows:

Axial displacement in one revolution of the main spindle measured in a plane perpendicular to the spindle faceplate, at a point next to the circumference of the spindle faceplate (Reference: ISO 230/1 1986, paragraph 5.63).

An ordered arrangement of uncoated or coated fibres intended to constitute a framework of a part before the "matrix" is introduced to form a "composite".

"CE" is equivalent to "computing element".

An array of "circuit elements" and metallic interconnections formed by deposition of a thick or thin film on an insulating "substrate".

Electrostatically focused tubes, employing input and output fibre optic or glass face plates, multi-alkali photocathodes (S-20 or S-25), but not microchannel plate amplifiers.

The coding or compression algorithm cannot accept externally supplied parameters (eg., cryptographic or key variables) and cannot be modified by the user.

A network of distributed optical sensors, using "laser" beams, to provide real-time flight control data for on-board processing.

A procedure that minimizes deviations from a four-dimensional (space and time) desired trajectory based on maximizing performance or effectiveness for mission tasks.

A linear or two-dimensional planar layer, or combination of planar layers, of individual detector elements, with or without readout electronics, which work in the focal plane.

A form of "spread spectrum" in which the transmission frequency of a single communication channel is made to change by discrete steps.

Cat 5 The maximum time (i.e., delay) taken by a signal, when switched from one selected output frequency to another selected output frequency, to reach any of the following:

Any kind of frequency source or signal generator, regardless of the actual technique used, providing a multiplicity of simultaneous or alternative output frequencies, from one or more outputs, controlled by, derived from or disciplined by a lesser number of standard (or master) frequencies.

A process to reduce a molten stream of metal alloy to droplets of 500 µm diameter or less by a high pressure gas stream.

Sensors are considered "geographically dispersed" when each location is distant from any other more than 1,500 m in any direction. Mobile sensors are always considered "geographically dispersed".

The time taken by the computer system to recognize an interrupt due to the event, service the interrupt and perform a context switch to an alternate memory-resident task waiting on the interrupt.

A process of pressurising a casting at temperatures exceeding 375 K (102°C) in a closed cavity through various media (gas, liquid, solid particles, etc.) to create equal force in all directions to reduce or eliminate internal voids in the casting.

Equipment which can perform all of the following:

Any combination of integrated circuit(s), or integrated circuit with "circuit elements" or "discrete components" connected together to perform (a) specific function(s), and having all of the following characteristics:

The processing of externally derived information-bearing images by algorithms such as time compression, filtering, extraction, selection, correlation, convolution or transformations between domains (e.g., fast Fourier transform or Walsh transform). This does not include algorithms using only linear or rotational transformation of a single image, such as translation, feature extraction, registration or false coloration.

All the means and functions ensuring the accessibility, confidentiality or integrity of information or communications, excluding the means and functions intended to safeguard against malfunctions. This includes "cryptography", cryptanalysis, protection against compromising emanations and computer security.

Cat 5 The bandwidth over which output power remains constant within 3 dB without adjustment of other operating parameters.

The specified unambiguous display range of a radar.

Two or more radar sensors are interconnected when they mutually exchange data in real time.

GSN This means "technology" or "software" which has been made available without restrictions upon its further dissemination.

A single magnetic field gradient sensing element and associated electronics the output of which is a measure of magnetic field gradient.

Equipment capable of pressurising a closed cavity through various media (gas, liquid, solid particles, etc.) to create equal pressure in all directions within the cavity upon a workpiece or material.

6 & 9 An assembly of components which produce both spatially and

ML 5, 9 & temporally coherent light that is amplified by stimulated emission of

23 radiation.

(Usually measured in terms of non-linearity) is the maximum deviation of the actual characteristic (average of upscale and downscale readings), positive or negative, from a straight line so positioned as to equalise and minimise the maximum deviations.

A data communication system having all of the following characteristics:

Are designed to detect the spatial variation of magnetic fields from sources external to the instrument. They consist of multiple "magnetometers" and associated electronics the output of which is a measure of magnetic field gradient. (See also "Intrinsic Magnetic Gradiometer")

Are designed to detect magnetic fields from sources external to the instrument. They consist of a single magnetic field sensing element and associated electronics the output of which is a measure of the magnetic field.

The primary storage for data or instructions for rapid access by a central processing unit. It consists of the internal storage of a "digital computer" and any hierarchical extension thereto, such as cache storage or non-sequentially accessed extended storage.

Cat 2 A substantially continuous phase that fills the space between particles,

Cat 8 & 9 whiskers or fibres.

The characteristic parameter which specifies in what range around the output value the correct value of the measurable variable lies with a confidence level of 95%. It includes the uncorrected systematic deviations, the uncorrected backlash and the random deviations

(Reference: ISO 10360-2, or VDI/VDE 2617).

An alloying process resulting from the bonding, fracturing and rebonding of elemental and master alloy powders by mechanical impact. Non-metallic particles may be incorporated in the alloy by addition of the appropriate powders.

A process to "solidify rapidly" and extract a ribbon-like alloy product by the insertion of a short segment of a rotating chilled block into a bath of a molten metal alloy.

A process to "solidify rapidly" a molten metal stream impinging upon a rotating chilled block, forming a flake, ribbon or rod-like product.

A "monolithic integrated circuit" or "multichip integrated circuit" containing an arithmetic logic unit (ALU) capable of executing general purpose instructions from an internal storage, on data contained in the internal storage.

A "monolithic integrated circuit" or "multichip integrated circuit" containing an arithmetic logic unit (ALU) capable of executing a series of general purpose instructions from an external storage.

A sequence of elementary instructions maintained in a special storage, the execution of which is initiated by the introduction of its reference instruction register.

Solid, liquid or gaseous substances or mixtures of substances which, in their application as primary, booster, or main charges in warheads, demolition and other military applications, are required to detonate.

ML 8 Mixtures of solid or liquid fuels and oxidizers which, when ignited, undergo an energetic chemical reaction at a controlled rate intended to produce specific time delays, or quantities of heat, noise, smoke, visible light or infrared radiation. Pyrophorics are a subclass of pyrotechnics, which contain no oxidizers but ignite spontaneously on contact with air.

A combination of passive or active "circuit elements" or both which:

Are capable of acquisition of imaging data from one discrete spectral band.

Two or more "monolithic integrated circuits" bonded to a common "substrate".

The "microprogramme" or equipment architecture technique which permits simultaneous processing of two or more data sequences under the control of one or more instruction sequences by means such as:

A class of system containing information with different sensitivities that simultaneously permits access by users with different security clearances and needs-to-know, but prevents users from obtaining access to information for which they lack authorization.

Are capable of simultaneous or serial acquisition of imaging data from two or more discrete spectral bands. Sensors having more than twenty discrete spectral bands are sometimes referred to as hyperspectral imaging sensors.

A physical interface to a distributed switching network. It uses a common medium which operates throughout at the same "digital transfer rate" using arbitration (e.g., token or carrier sense) for transmission. Independently from any other, it selects data packets or data groups (e.g., IEEE 802) addressed to it. It is an assembly that can be integrated into computer or telecommunications equipment to provide communications access.

A computational device designed or modified to mimic the behaviour of a neuron or a collection of neurons, i.e., a computational device which is distinguished by its hardware capability to modulate the weights and numbers of the interconnections of a multiplicity of computational components based on previous data.

An electrical signal given in terms of power spectral density. The relation between "noise level" expressed in peak-to-peak is given by
S2 pp = 8No(f2-f1), where Spp is the peak-to-peak value of the signal (e.g., nanoteslas), No is the power spectral density (e.g., (nanotesla)2/Hz) and (f2-f1) defines the bandwidth of interest.

Includes the items within or attached directly to the reactor vessel, the equipment which controls the level of power in the core, and the components which normally contain or come into direct contact with or control the primary coolant of the reactor core.

The automatic control of a process performed by a device that makes use of numeric data usually introduced as the operation is in progress (Ref. ISO 2382).

Cat 9 "Object code": An equipment executable form of a convenient expression

of one or more processes ("source code" (or source language)) which has been converted by a programming system.

In optical communications, an amplification technique that introduces a gain of optical signals that have been generated by a separate optical source, without conversion to electrical signals, i.e., using semiconductor optical amplifiers, optical fibre luminescent amplifiers.

A computer designed or modified to use light to represent data and whose computational logic elements are based on directly coupled optical devices.

A "monolithic integrated circuit" or a "hybrid integrated circuit", containing one or more parts designed to function as a photosensor or photoemitter or to perform (an) optical or (an) electro-optical function(s).

The routing of or switching of signals in optical form without conversion to electrical signals.

The total number of ampere-turns in the coil (i.e., the sum of the number of turns multiplied by the maximum current carried by each turn) divided by the total cross-section of the coil (comprising the superconducting filaments, the metallic matrix in which the superconducting filaments are embedded, the encapsulating material, any cooling channels, etc.).

Energy per pulse in joules divided by the pulse duration in seconds.

A smart card containing a microcircuit which has been programmed for a specific application and cannot be reprogrammed for any other application by the user.

Changing the transmitted power of the altimeter signal so that received power at the "aircraft" altitude is always at the minimum necessary to determine the altitude.

Speciality chemicals used in the manufacture of military explosives.

The application of any process intended to increase the concentration of the controlled isotope.

"Aircraft" stability or manoeuvering control using force/moment generators, i.e. aerodynamic control surfaces or propulsive thrust vectoring.

An element is a "principal element" when its replacement value is more than 35% of the total value of the system of which it is an element. Element value is the price paid for the element by the manufacturer of the system, or by the system integrator. Total value is the normal international selling price to unrelated parties at the point of manufacture or consolidation of shipment.

Means all production stages, such as: product engineering, manufacture, integration, assembly (mounting), inspection, testing, quality assurance.

Cat 4 A sequence of instructions to carry out a process in, or convertible

Cat 5 & 6 into, a form executable by an electronic computer.

The coding and processing of a radar signal pulse of long time duration to one of short time duration, while maintaining the benefits of high pulse energy.

Duration of a "laser" pulse measured at Full Width Half Intensity (FWHI) levels.

A "laser" in which the energy is stored in the population inversion or in the optical resonator and subsequently emitted in a pulse.

Any technique which changes, in a pseudo-random sequence, the carrier frequency of a pulsed radar transmitter between pulses or between groups of pulses by an amount equal to or larger than the pulse bandwidth.

Any modulation technique for spreading energy originating from a signal with a relatively narrow frequency band, over a much wider band of frequencies, by using random or pseudo-random coding.

For "dynamic signal analysers", the widest frequency range which the analyser can output to display or mass storage without causing any discontinuity in the analysis of the input data. For analysers with more than one channel, the channel configuration yielding the widest "real-time bandwidth" shall be used to make the calculation.

Cat 6 & 7 The processing of data by a computer system providing a required level ofservice, as a function of available resources, within a guaranteed response time, regardless of the load of the system, when stimulated by an external event.

Cat 6 As applied to "technology", refers to only that portion of "technology"

Cat 9 which is peculiarly responsible for achieving or exceeding the controlled

GTN performance levels, characteristics or functions. Such "required"

"technology" may be shared by different products.

The least increment of a measuring device; on digital instruments, the least significant bit. (Reference: ANSI B-89.1.12)

Substances which produce temporary irritating or disabling physical effects which disappear within minutes of removal from exposure. There is no significant risk of permanent injury and medical treatment is rarely required.

A process to reduce a stream or pool of molten metal to droplets to a diameter of 500 µm or less by centrifugal force.

Radial displacement in one revolution of the main spindle measured in a plane perpendicular to the spindle axis at a point on the external or internal revolving surface to be tested (Reference: ISO 230/1-1986, paragraph 5.61).

The ratio of change in output to a change in the input intended to be measured. Scale factor is generally evaluated as the slope of the straight line that can be fitted by the method of least squares to input-output data obtained by varying the input cyclically over the input range.

The time required for the output to come within one-half bit of the final value when switching between any two levels of the converter.

"SHPL" is equivalent to "Super High Power Laser".

Apparatus capable of measuring and displaying basic properties of the single-frequency components of multi-frequency signals.

Cat 4 The processing of externally derived information-

Cat 5 bearing signals by algorithms such as time

Cat 6 compression, filtering, extraction, selection, correlation, convolution or transformations between domains (e.g., fast Fourier transform or Walsh transform).

Lists A collection of one or more "programmes" or "microprogrammes" fixed in any tangible medium of expression.

A process involving the solidification of molten material at cooling rates exceeding 1,000 K/sec.

Cat 5 A convenient expression of one or more processes which may be

Cat 6 turned by a programming system into equipment executable

Cat 7 form ("object code" (or object language)).

Cat 9

Cat 9 Active and passive satellites and space probes.

Cat 6 Products designed, manufactured and tested to meet the special electrical,

ML 23 mechanical or environmental requirements for use in the launch and deployment of satellites or high altitude flight systems operating at altitudes of 100 km or higher.

A process to "solidify rapidly" a molten metal stream impinging upon a chilled block, forming a flake-like product.

The technique whereby energy in a relatively narrow-band communication channel is spread over a much wider energy spectrum.

Standard deviation (1 sigma) of the variation of a particular parameter from its calibrated value measured under stable temperature conditions. This can be expressed as a function of time.

Cat 3 A control using instructions stored in an electronic storage which a

Cat 5 processor can execute in order to direct the performance of predetermined functions.

A sheet of base material with or without an interconnection pattern and on which or within which "discrete components" or integrated circuits or both can be located.

Monolithic compounds with dimensions suitable for the production of optical elements such as mirrors or optical windows.

Cat 9 Nickel-, cobalt- or iron-base alloys having strengths superior to any alloys in the AISI 300 series at temperatures over 922 K (649°C) under severe environmental and operating conditions.

Cat 3 Refers to materials,(i.e., metals, alloys or compounds) which can lose all

Cat 6 electrical resistance (i.e., which can attain infinite electrical conductivity

Cat 8 and carry very large electrical currents without Joule heating).

A "laser" capable of delivering (the total or any portion of) the output energy exceeding 1 kJ within 50 ms or having an average or CW power exceeding 20 kW.

Cat 2 A deformation process using heat for metals that are normally characterised by low values of elongation (less than 20%) at the breaking point as determined at room temperature by conventional tensile strength testing, in order to achieve elongations during processing which are at least 2 times those values.

A cryptographic algorithm using an identical key for both encryption and decryption.

Processed, correlated (fusion of radar target data to flight plan position) and updated aircraft flight position report available to the Air Traffic Control centre controllers.

A computer where the flow and modification of the data is dynamically controllable at the logic gate level by the user.

Gases which produce temporary irritating or disabling effects which disappear within minutes of removal from exposure.

Both Specific information necessary for the "development", "production" or

Lists "use" of a product. The information takes the form of technical data or technical assistance. Controlled "technology" is defined in the General Technology Note and in the Dual-Use List.

Equipment at which information enters or leaves the telecommunication system, e.g., telephone, data device, computer, facsimile device.

The number of vectors generated per second which have 10 pixel poly line vectors, clip tested, randomly oriented, with either integer or floating point X-Y-Z coordinate values (whichever produces the maximum rate).

A tool-holding spindle which alters, during the machining process, the angular position of its centre line with respect to any other axis.

The time taken from the application of a light stimulus for the current increment to reach a value of 1-1/e times the final value (i.e., 63% of the final value).

Automated control of "aircraft" state variables and flight path to meet mission objectives responding to real time changes in data regarding objectives, hazards or other "aircraft".

The number of bits, including line coding, overhead and so forth per unit time passing between corresponding equipment in a digital transmission system. (See also "digital transfer rate")

A "laser" in which the lasing species is excited through the transfer of energy by collision of a non-lasing atom or molecule with a lasing atom or molecule species.

The ability of a "laser" to produce a continuous output at all wavelengths over a range of several "laser" transitions. A line selectable "laser" produces discrete wavelengths within one "laser" transition and is not considered "tunable".

Cat 1, 2, 4 Operation, installation (including on-site

Cat 5, 6, 7 installation), maintenance (checking), repair,

Cat 8 & 9 overhaul and refurbishing.

Cat 5 The facility allowing a user to insert, modify or replace "programmes" by means other than:

b. The setting of function controls including entry of parameters.

A process to reduce a molten stream of metal to droplets of a diameter of 500 µm or less by the rapid evolution of a dissolved gas upon exposure to a vacuum.

Use trailing edge flaps or tabs, or leading edge slats or pivoted nose droop, the position of which can be controlled in flight.