TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

INHERENT FREQUENCY [5 records]

Record 1 2023-10-17

English

Subject field(s)
  • Radioelectricity
CONT

For the first time, we identified an inherent resonant operating frequency for CDI [capacitive deionization] equal to the inverse geometric mean of the RC [resistor-capacitor] and flow time scales of the cell.

French

Domaine(s)
  • Radioélectricité

Spanish

Save record 1

Record 2 2007-01-31

English

Subject field(s)
  • Radar, Radio Guidance and Goniometry
  • Spacecraft
  • Weather Stations and Meteorological Instruments and Equipment
CONT

Microwave sensors are particularly effective for measuring land surface hydrological parameters. Since microwave sensors enable us to observe ground surfaces both day and night, we can observe hydrologic phenomena that show remarkable diurnal variation. Further, an inherent feature of a microwave sensor lies in its wavelength between 1 mm and 1 m(0. 3 to 300 GHz of frequency), making it possible to conduct observations without influence from weather and to detect the scattering information not only at the surface, but also in the volume. Furthermore, we can directly observe liquid water having larger relative permittivity than other physical parameters because the scattering of microwaves heavily depends on relative permittivity. There are two types of microwave sensors : a passive microwave sensor that observe weak microwave signals naturally radiated from the Earth's surface, and an active microwave sensor that measures the backscattering coefficient of the transmitted beam.

OBS

microwave sensor: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).

Key term(s)
  • micro-wave sensor
  • micro wave sensor

French

Domaine(s)
  • Radar, radioguidage et radiogoniométrie
  • Engins spatiaux
  • Stations, instruments et équipements météorologiques
CONT

Tous les objets reflètent, absorbent ou émettent un rayonnement électromagnétique qui correspond à leur composition et à leur structure. Un capteur hyperspectral, fonctionnant à l'aide du rayonnement solaire réfléchi, détecte les spectres particuliers, autrement dit la «signature spectrale» d'un objet, ce qui permet ensuite d'en déterminer la composition.

OBS

capteur hyperspectral : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

Spanish

Campo(s) temático(s)
  • Guía radárica, radioguía y radiogoniometría
  • Naves espaciales
  • Estaciones, instrumentos y equipos meteorológicos
Save record 2

Record 3 2007-01-15

English

Subject field(s)
  • Acoustics (Physics)
DEF

A loudspeaker design in which the reproduced sound does not become more directional as the frequency rises.

OBS

An inherent characteristic of high-frequency drivers is the tendency to, as frequency rises, appear more directional and lose the desired dispersion characteristics. A constant directivity horn, for example, attempts to alleviate some of the directionality.

French

Domaine(s)
  • Acoustique (Physique)
DEF

Propriété d'un haut-parleur dont l'angle de projection est imperméable aux variations de fréquence.

Spanish

Save record 3

Record 4 2004-02-23

English

Subject field(s)
  • Television (Radioelectricity)
DEF

A sawtooth waveform, recurring at line frequency, introduced into the picture signal to compensate for inherent amplitude distortion in the camera output.

French

Domaine(s)
  • Télévision (Radioélectricité)
DEF

Signal périodique à la fréquence de ligne, en forme de dents de scie, utilisé pour corriger la distorsion de luminance due au tube analyseur.

Spanish

Campo(s) temático(s)
  • Televisión (Radioelectricidad)
Save record 4

Record 5 1989-11-02

English

Subject field(s)
  • Radar, Radio Guidance and Goniometry
DEF

A stationary target discrimination technique that uses only the scalar information(amplitude, frequency, and phase) inherent in the radar signal to achieve target-clutter discrimination.

French

Domaine(s)
  • Radar, radioguidage et radiogoniométrie

Spanish

Save record 5

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