TERMIUM Plus®

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

SEA CLUTTER [6 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2012-08-22

English

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

Radar echoes caused by waves of the sea.

OBS

sea clutter : term and definition standardized by the Glossary for Pilots and Air Traffic Services Personnel Committee; term officially approved by the RADARSAT-2 Terminology Approval Group(RTAG).

French

Domaine(s)
  • Radar, radioguidage et radiogoniométrie
DEF

Échos radar produits par réflexion sur les vagues.

OBS

[Le fouillis de mer concerne] l'ensemble des phénomènes de rétrodiffusion liés à l'état de surface de la mer, de périodicités différentes, qui se manifeste par une multitude de luminances sur l'image obtenue. Un effet semblable peut apparaître également sur les grandes étendues continentales d'eau.

OBS

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

OBS

échos de vagues : terme et définition normalisés par le Comité sur le Glossaire à l'intention des pilotes et du personnel des services de la circulation aérienne.

Spanish

Campo(s) temático(s)
  • Guía radárica, radioguía y radiogoniometría
Key term(s)
  • reflejos del mar
Save record 1

Record 2 2012-04-20

English

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

In radar operations, the reception and visual display of radar echoes caused by precipitation, chaff, terrain, numerous aircraft, or other phenomena.

OBS

Such echoes may limit or preclude ATC [air traffic control] from providing services based on radar.

CONT

Clutter is the result of echoes from land, water, weather, and so forth. The unwanted echoes can consist of ground clutter(echoes from surrounding land masses), sea clutter(echoes from the irregular surface of the sea), or echoes from clouds and rain.

OBS

radar clutter: term officially approved by the International Civil Aviation Organization (ICAO) and by the RADARSAT-2 Terminology Approval Group (RTAG).

French

Domaine(s)
  • Radar, radioguidage et radiogoniométrie
  • Télédétection
DEF

Dans les opérations radar, réception et affichage d'un écho radar causé par les précipitations, des plaquettes de brouillage, le relief, de nombreux aéronefs ou tout autre phénomène.

OBS

De tels échos peuvent limiter ou empêcher l'ATC [contrôle de la circulation aérienne] de fournir des services radar ou limiter les services fournis.

OBS

fouillis radar : terme uniformisé par le Groupe de travail de terminologie des transmissions.

OBS

brouillage radar : terme uniformisé par l'Organisation de l'aviation civile internationale (OACI).

OBS

fouillis d'échos : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

Spanish

Campo(s) temático(s)
  • Guía radárica, radioguía y radiogoniometría
  • Teledetección
DEF

Señales no deseadas, ecos o imágenes que aparecen en la pantalla del radar, y que interfieren con las señales correctas.

DEF

Señales parásitas en una presentación radar.

OBS

ecos parásitos radar: término aceptado oficialmente por la Organización de Aviación Civil Internacional (OACI).

Save record 2

Record 3 2009-01-14

English

Subject field(s)
  • Sea Operations (Military)
  • Radar, Radio Guidance and Goniometry
CONT

The anti-clutter sea control is often referred to as STC(Sensitivity Time Control) which decreases the amplification of the receiver immediately after a radar pulse is transmitted, and progressively increases the sensitivity as the range increases. A common mistake is to over adjust the A/C SEA control so that the surface clutter is completely removed. By rotating the control fully clockwise, you see how dangerous this can be; a dark zone is created near the center of the screen and close-in targets can be lost. This dark zone is even more dangerous if the gain has not been properly adjusted. Always leave a little surface clutter visible on the screen. If no surface clutter is observed(on very calm water), set the control at the fully counterclockwise position.

OBS

Turn clockwise to increase sea anti-clutter(STC, Sensitivity Time Control) effect, and counter-clockwise to decrease sea anti-clutter effect.

Key term(s)
  • anticlutter sea control
  • anti clutter sea control
  • sea anticlutter
  • sea anti clutter

French

Domaine(s)
  • Opérations en mer (Militaire)
  • Radar, radioguidage et radiogoniométrie
CONT

On peut avoir recours à l'anti-retour de pluie et à l'anti-retour de mer pour éliminer les faux échos. Il faut cependant être prudent en les utilisant, car on risque de masquer d'autres cibles proches si on place les commandes de ces dispositifs à un niveau trop élevé.

OBS

L'anti-retour de mer [sert] à régler le gain à courte distance.

OBS

anti-retour de mer : terme uniformisé par le Comité de normalisation de la terminologie navale.

Key term(s)
  • anti retour de mer
  • antiretour de mer

Spanish

Save record 3

Record 4 2002-11-05

English

Subject field(s)
  • Remote Sensing
  • Electromagnetic Radiation
CONT

X-band(9. 5-10. 0 GHz) backscatter at near grazing incidence(0. 2 deg) from the sea off the coast of Kauai, Hawaii, was measured with a radar characterized by a high spatial resolution in range(0. 3 m) and a high temporal resolution(2000 Hz pulse repetition frequency(PRF].... Each type of clutter exhibited the characteristic spiky behavior which has come to be expected from microwave sea backscatter observed at low grazing angles and high range resolutions, while showing, between themselves, marked transmit geometry and polarization dependent contrasts, with the horizontally polarized clutter, measured with an UP transmit geometry, being especially notable for its frequently occurring, significant high frequency spectral content.

French

Domaine(s)
  • Télédétection
  • Rayonnements électromagnétiques

Spanish

Save record 4

Record 5 1992-02-20

English

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

At sea, air defense also uses large radars on ships, but more use is made of airborne radar and control systems. The weight and size of long-range radars restricts their installation to the larger ships; airborne radar over the ocean does not have severe land clutter to contend with, making it simpler than overland systems; the horizon limits are at a greater range; and the aircraft can patrol a large area.

French

Domaine(s)
  • Radar, radioguidage et radiogoniométrie

Spanish

Save record 5

Record 6 1989-09-12

English

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

The functional dual of the dominant scatter algorithm : it self-synchronizes a distorted array an radar backscatter from statistically homogenous scatterers as is typified by sea clutter.

French

Domaine(s)
  • Radar, radioguidage et radiogoniométrie

Spanish

Save record 6

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