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SEA CLUTTER [3 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 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 2

Record 3 1995-09-08

English

Subject field(s)
  • Remote Sensing

French

Domaine(s)
  • Télédétection
DEF

Ensemble de phénomènes de rétrodiffusion liés à l'état de surface de la mer, de périodicités différentes, qui se manifeste par un fouillis de luminances sur l'image obtenue.

OBS

Un effet semblable peut apparaître également sur les grandes étendues continentales d'eau libre.

Spanish

Save record 3

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