TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

A measurement of a signal’s frequency at a specific instant within an electromagnetic signal.  3, record 1, English, - instantaneous%20frequency%20measurement

Record number: 1, Textual support number: 1 OBS

The IFM is determined from the temporal rate of change of the phase of a signal.  3, record 1, English, - instantaneous%20frequency%20measurement

Record number: 1, Textual support number: 2 OBS

instantaneous frequency measurement; IFM : designations and definition officially approved by the Joint Terminology Panel; designations standardized by NATO.  4, record 1, English, - instantaneous%20frequency%20measurement

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Mesure de la fréquence d'un signal à un moment précis du signal électromagnétique.  2, record 1, French, - mesure%20de%20fr%C3%A9quence%20instantan%C3%A9e

Record number: 1, Textual support number: 1 OBS

La mesure de fréquence instantanée est déterminée à partir du taux de changement temporel de la phase d'un signal.  2, record 1, French, - mesure%20de%20fr%C3%A9quence%20instantan%C3%A9e

Record number: 1, Textual support number: 2 OBS

mesure de fréquence instantanée; MFI; IFM : désignations et définition uniformisées par le Groupe d'experts en terminologie interarmées.  3, record 1, French, - mesure%20de%20fr%C3%A9quence%20instantan%C3%A9e

Record number: 1, Textual support number: 3 OBS

mesure de fréquence instantanée : désignation normalisée par l'OTAN.  3, record 1, French, - mesure%20de%20fr%C3%A9quence%20instantan%C3%A9e

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

An electronic counter-countermeasure(ECCM) technique in which the instantaneous carrier frequency of a signal is periodically relocated, according to a predetermined code, to other positions within a frequency spectrum much wider than required for normal message transmission.  4, record 2, English, - frequency%20hopping

Record number: 2, Textual support number: 1 OBS

The receiver uses the same code to keep itself in synchronism with the hopping pattern.  4, record 2, English, - frequency%20hopping

Record number: 2, Textual support number: 2 OBS

frequency hopping: designation and definition standardized by Federal Standard - 1037, 1980 (USA) - Glossary of Telecommunication Terms.  5, record 2, English, - frequency%20hopping

Record number: 2, Textual support number: 3 OBS

frequency hopping; FH: designations standardized by NATO.  6, record 2, English, - frequency%20hopping

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 DEF

Technique utilisée en radiocommunication militaire pour éviter l'interception et le brouillage des transmissions radioélectriques en milieu hostile.  4, record 2, French, - saut%20de%20fr%C3%A9quence

Record number: 2, Textual support number: 1 OBS

Il s'agit d'un dispositif qui provoque des sauts périodiques de la fréquence porteuse d'un émetteur sur une large bande du spectre selon un programme préétabli. Seul le récepteur muni du même programme est en mesure de suivre l'évolution d'une transmission.  4, record 2, French, - saut%20de%20fr%C3%A9quence

Record number: 2, Textual support number: 2 DEF

saut de fréquence; SF : désignations normalisées par l'OTAN.  5, record 2, French, - saut%20de%20fr%C3%A9quence

Record 2,  Textual support,  Spanish

Record number: 2, Textual support number: 1 DEF

Técnica de transmisión en la que la frecuencia portadora salta o cambia de valor periodicamente dentro de un espectro de frecuencias mucho más amplio que el requerido para la transmisión normal de los mensajes, de acuerdo con un código predeterminado que usan emisor y receptor.  2, record 2, Spanish, - salto%20de%20frecuencia

Record number: 2, Textual support number: 1 OBS

Esta técnica tiene un origen militar y se desarrolló para evitar el espionaje de las comunicaciones; actualmente se utiliza en el sistema GSM (Sistema Global de Comunicaciones Móviles).  2, record 2, Spanish, - salto%20de%20frecuencia

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

Demodulation of [a] signal requires a system that produces an output proportional to the instantaneous frequency deviation of the input signal. Such a system is called a frequency discriminator.  3, record 3, English, - frequency%20discriminator

Record 3,  Textual support,  French

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 DEF

Angle modulation in which the instantaneous frequency of a sine-wave carrier is caused to depart from the carrier frequency by an amount proportional to the instantaneous amplitude of the modulating wave.  3, record 4, English, - frequency%20modulation

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 DEF

Modulation angulaire d'une onde porteuse sinusoïdale telle que la fréquence instantanée de l'onde modulée diffère de la fréquence de l'onde porteuse d'une quantité proportionnelle à l'amplitude instantanée du signal modulant.  4, record 4, French, - modulation%20de%20fr%C3%A9quence

Record number: 4, Textual support number: 1 OBS

«Si l'abréviation anglaise (FM) s'est imposée dans l'usage universel, c'est que le sigle M.F. désigne déjà en français les moyennes fréquences», d'après une fiche (no 77) de Radio-Canada.  5, record 4, French, - modulation%20de%20fr%C3%A9quence

Record number: 4, Textual support number: 2 OBS

Il faut noter qu'en France l'abréviation F.M. est à éviter tandis qu'au Canada la Loi sur la radiodiffusion sanctionne cet usage.  6, record 4, French, - modulation%20de%20fr%C3%A9quence

Record 4,  Textual support,  Spanish

Record number: 4, Textual support number: 1 DEF

Sistema de modulación en el que la señal moduladora modifica el valor instantáneo de la frecuencia de la señal portadora.  2, record 4, Spanish, - modulaci%C3%B3n%20de%20frecuencia

Record number: 4, Textual support number: 1 CONT

La modulación de frecuencia se emplea en la frecuencia modulada de radio y en algunos métodos de transmisión de datos de baja velocidad por líneas telefónicas.  4, record 4, Spanish, - modulaci%C3%B3n%20de%20frecuencia

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 DEF

The form of frequency modulation in which the modulating wave shifts the output frequency between predetermined values, and the output wave has no phase discontinuity.  7, record 5, English, - frequency%2Dshift%20keying

Record number: 5, Textual support number: 2 DEF

Frequency modulation in which a digital modulating signal varies the output frequency between a fixed number of predetermined values.  8, record 5, English, - frequency%2Dshift%20keying

Record number: 5, Textual support number: 1 OBS

Commonly, the instantaneous frequency is shifted between two discrete values termed the mark and space frequencies.  7, record 5, English, - frequency%2Dshift%20keying

Record number: 5, Textual support number: 2 OBS

frequency shift modulation: term officially approved by the International Civil Aviation Organization (ICAO).  9, record 5, English, - frequency%2Dshift%20keying

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 DEF

Modulation de fréquence par un signal numérique modulateur qui fait varier la fréquence du signal de sortie parmi un nombre fixe de valeurs prédéfinies.  5, record 5, French, - modulation%20par%20d%C3%A9placement%20de%20fr%C3%A9quence

Record number: 5, Textual support number: 1 OBS

transmission par déplacement de fréquence; transmission télégraphique par déplacement de fréquence : termes normalisés par l'AFNOR.  6, record 5, French, - modulation%20par%20d%C3%A9placement%20de%20fr%C3%A9quence

Record number: 5, Textual support number: 2 OBS

modulation par déplacement de fréquence : terme normalisé par la CSA et l'ISO.  6, record 5, French, - modulation%20par%20d%C3%A9placement%20de%20fr%C3%A9quence

Record number: 5, Textual support number: 3 OBS

modulation par déplacement de fréquence : terme uniformisé par l'Organisation de l'aviation civile internationale (OACI).  7, record 5, French, - modulation%20par%20d%C3%A9placement%20de%20fr%C3%A9quence

Record 5,  Textual support,  Spanish

Record number: 5, Textual support number: 1 DEF

Método de modulación por el cual la señal moduladora desplaza la frecuencia de la señal portadora entre dos valores predeterminados y en el que la señal resultante no presenta discontinuidad de fase.  4, record 5, Spanish, - modulaci%C3%B3n%20por%20desplazamiento%20de%20frecuencia

Record number: 5, Textual support number: 1 OBS

modulación por desplazamiento de frecuencia : término aceptado oficialmente por la Organización de Aviación Civil Internacional (OACI).  5, record 5, Spanish, - modulaci%C3%B3n%20por%20desplazamiento%20de%20frecuencia

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 CONT

Temporal Paul wavelet analysis for instantaneous phase extraction using shadow moiré technique is proposed. Unlike the Morlet wavelet, the Paul wavelet has less restriction on the adjustment of wavelet parameters and can provide an optimal time and frequency resolution for a particular application by selecting the proper parameters. The Paul wavelet is a complex wavelet and is suitable for processing the temporal intensity data obtained from the shadow moiré technique for the phase retrieval. The proposed method can extract the phase information related to the state of the dynamic object at every instant in temporal domain. The phase information is associated to the displacement, three-dimensional(3D) surface-profile and the instantaneous state of the dynamic object. In addition, the instantaneous frequency of vibrating object can be obtained using the scale of the wavelet ridge by direct integration without temporal and spatial phase unwrapping. Thus the phase unwrapping error can be avoided. An experiment is conducted on the central loaded beam to demonstrate the validity of the proposed technique.  3, record 6, English, - shadow%20moir%C3%A9%20technique

Record number: 6, Textual support number: 1 OBS

The term “moiré” is ... a French word referring to “an irregular wavy finish usually produced on a fabric by pressing between engraved rollers” (Webster’s 1981). In optics it refers to a beat pattern produced between two gratings of approximately equal spacing. It can be seen in everyday things such as the overlapping of two window screens, the rescreening of a half-tone picture, or with a striped shirt seen on television. The use of moiré for reduced sensitivity testing was introduced by Lord Rayleigh in 1874. Lord Rayleigh looked at the moiré between two identical gratings to determine their quality even though each individual grating could not be resolved under a microscope. ... Since Lord Rayleigh first noticed the phenomena of moiré fringes, moiré techniques have been used for a number of testing applications. Righi (1887) first noticed that the relative displacement of two gratings could be determined by observing the movement of the moiré fringes. The next significant advance in the use of moiré was presented by Weller and Shepherd (1948). They used moiré to measure the deformation of an object under applied stress by looking at the differences in a grating pattern before and after the applied stress. They were the first to use shadow moiré, where a grating is placed in front of a nonflat surface to determine the shape of the object behind it by using the shape of the moiré fringes.  4, record 6, English, - shadow%20moir%C3%A9%20technique

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 CONT

Le moiré d’ombre. Cette technique […] consiste à créer un moiré entre une grille de référence placée juste devant l’objet, et l’ombre de cette même grille projetée sur la surface étudiée. Les déformations de cette surface modifient le pas du réseau «ombre» créant ainsi le moiré. Une mesure du pas de ce moiré permet, à l’aide des équations précédentes, de remont3er aux déformations locales et de dresser la carte des hauteurs.  5, record 6, French, - technique%20du%20moir%C3%A9%20d%27ombre

Record number: 6, Textual support number: 2 CONT

Le moiré d’ombre. Il s’agit d’un dérivé (conceptuellement, pas historiquement) de la mesure de forme par projection de frange.  6, record 6, French, - technique%20du%20moir%C3%A9%20d%27ombre

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 DEF

The rate of change of phase, expressed in radians per second, divided by 2pi.  2, record 7, English, - instantaneous%20frequency

Record number: 7, Textual support number: 1 OBS

of an oscillation, not necessarily sinusoidal.  2, record 7, English, - instantaneous%20frequency

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 DEF

Quotient de 2pi de la dérivée par rapport au temps de la phase exprimé en radians.  1, record 7, French, - fr%C3%A9quence%20instantan%C3%A9e

Record number: 7, Textual support number: 1 OBS

d'une oscillation non nécessairement sinusoïdale.  1, record 7, French, - fr%C3%A9quence%20instantan%C3%A9e

Record 7,  Textual support,  Spanish

Record number: 7, Textual support number: 1 DEF

Relación del cambio de fase, expresado en radianes por segundo, dividido por 2pi.  1, record 7, Spanish, - frecuencia%20instant%C3%A1nea

Record number: 7, Textual support number: 1 OBS

De una oscilación, no necesariamente sinusoidal.  1, record 7, Spanish, - frecuencia%20instant%C3%A1nea

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 DEF

In angle modulation, the maximum value of the instantaneous frequency deviation for a given modulating signal.  2, record 8, English, - peak%20frequency%20deviation

Record 8,  Textual support,  French

Record number: 8, Textual support number: 1 DEF

En modulation angulaire, valeur maximale de la déviation instantanée de fréquence pour un signal modulant spécifié.  1, record 8, French, - excursion%20de%20fr%C3%A9quence%20maximale

Record 8,  Textual support,  Spanish

Record number: 8, Textual support number: 1 DEF

En modulación angular, valor máximo de la desviación de frecuencia instantánea para una señal moduladora determinada.  1, record 8, Spanish, - desviaci%C3%B3n%20de%20frecuencia%20de%20cresta

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 DEF

This is a measure of the instantaneous time by which the sinusoidal output follows the sinusoidal input signal at a specified frequency. This is usually expressed in degrees as the vector angle between input and output.  1, record 9, English, - phase%20lag

Record 9,  Textual support,  French

Record number: 9, Textual support number: 1 DEF

Mesure de l'intervalle de temps compris entre la grandeur de sortie sinusoidale et le signal d'entrée sinusoïdal à une certaine fréquence. C'est l'angle compris entre les grandeurs d'entrée et de sortie en représentation vectorielle.  1, record 9, French, - d%C3%A9phasage

Record 9,  Textual support,  Spanish

Record 10,  Textual support,  French

Record 10,  Textual support,  Spanish

Record 11,  Textual support,  French

Record 11,  Textual support,  Spanish

Record 12,  Textual support,  French

Record 12,  Textual support,  Spanish