TERMIUM Plus®

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

ALTITUDE PULSE [8 records]

Record 1 2023-03-17

English

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

Ground-based weather radars emerged during World War II and have since been used to observe precipitation, mostly over land. Ground-based radars send out pulses of microwave energy in narrow beams that scan in a circular pattern. When the microwave pulse encounters precipitation particles in the atmosphere, the energy is scattered in all directions, sending some energy back to the radar. These measurements are used to estimate intensity, altitude, precipitation type(e. g., rain, snow, hail), and motion. Obtaining continuous measurements of precipitation from ground-based systems(e. g., from rain gauges and radar systems) presents a challenge due to large gaps between monitoring sites on land and huge gaps over the ocean.

Key term(s)
  • ground based weather radar
  • ground based meteorological radar

French

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

Spanish

Save record 1

Record 2 2023-02-09

English

Subject field(s)
  • Radar, Radio Guidance and Goniometry
  • Surveillance, Detection and Reconnaissance (Military)
OBS

[The pulse acquisitiion radar is] a search radar with a 20 rpm [revolutions per minute] rotation for high/medium altitude target detection.

French

Domaine(s)
  • Radar, radioguidage et radiogoniométrie
  • Surveillance, détection et reconnaissance (Militaire)
OBS

Le radar d'acquisition à impulsions (PAR) assure la couverture à moyenne et haute altitude à grande distance.

Spanish

Save record 2

Record 3 2016-03-08

English

Subject field(s)
  • Information Processing (Informatics)
CONT

The encoder/decoder module receives biphase data(self-test initiate) from the GPDC, generates a receiver clock pulse... and encodes serial digital data into biphase data(altitude) for transmission to the GPDC.

French

Domaine(s)
  • Traitement de l'information (Informatique)

Spanish

Save record 3

Record 4 2012-02-02

English

Subject field(s)
  • Information Processing (Informatics)
  • Computer Mathematics
OBS

The encoder/decoder module receives biphase data... from the GPDC, generates a receiver clock pulse used to transfer the decoded data into a storage register, and encodes serial digital data into biphase data(altitude) for transmission to the GPDC.

OBS

digital data: Data that are stored in the form of discrete digits.

Key term(s)
  • serial-digital data

French

Domaine(s)
  • Traitement de l'information (Informatique)
  • Mathématiques informatiques
OBS

Voir arithmétique sérielle, ordinateur sériel.

Spanish

Save record 4

Record 5 2011-11-07

English

Subject field(s)
  • Electromagnetism
  • Atomic Physics
CONT

High-altitude electromagnetic pulse... is an electromagnetic radiation of very short rise time, large amplitude, and brief duration that follows a nuclear explosion above the atmosphere. The area over which a single [high-altitude electromagnetic pulse] event is experienced can be very great if the explosion is high enough and large enough. Several such nuclear explosions might render unprotected electronic equipment and systems inoperative over an area as large as the continental United States.

French

Domaine(s)
  • Électromagnétisme
  • Physique atomique
OBS

Explosions nucléaires.

Spanish

Save record 5

Record 6 2002-02-11

English

Subject field(s)
  • Radio Interference
DEF

Synchronization delay introduced between the time of transmission of the radar pulse and the start of the trace on the indicator, for the purpose of eliminating the altitude hole on the plan position indicator-type display.

OBS

altitude delay: term and definition standardized by NATO.

French

Domaine(s)
  • Perturbations radio
DEF

Retard dans la synchronisation introduit entre le départ d'une impulsion radar et le début de sa trace sur l'écran, afin d'en éliminer le cône mort.

OBS

retard de suppression d'écho proche : terme et définition normalisés par l'OTAN.

Spanish

Campo(s) temático(s)
  • Perturbaciones radioeléctricas
DEF

Retraso en la sincronización que se introduce entre el instante de la transmisión del impulso de un radar y el comienzo del barrido en la pantalla, con objeto de eliminar los ecos de objetos próximos, en una pantalla tipo PIT.

Save record 6

Record 7 1982-01-07

English

Subject field(s)
  • Aeroindustry
CONT

Primary radar is(...) the original form of radio-detection, in which a beam of microwave energy illuminates a passive or "non-cooperating" target and the reflected pulse or echo is processed to display its bearing and distance from the transmitter(three-dimensional or height-finder radars will also display its altitude, although these are, so far, restricted to military surveillance applications, essentially for reasons of cost, plus the fact that there are alternative means of determining the altitude of aircraft, other than hostile intruders).

French

Domaine(s)
  • Constructions aéronautiques
CONT

Le radar primaire, c'est (...) la forme originale de la détection électromagnétique: un faisceau de micro-ondes est envoyé sur une cible passive et le signal réfléchi par celle-ci est traité pour en déterminer et faire apparaître sur un écran le relèvement et distance par rapport à l'émetteur (les radars tridimensionnels indiquent en outre l'altitude de la cible mais, essentiellement pour des raisons de coût et parce qu'il est possible de déterminer l'altitude des aéronefs amis par d'autres moyens, leurs applications sont actuellement limitées à la surveillance militaire).

Spanish

Save record 7

Record 8 1976-06-19

English

Subject field(s)
  • Air Transport

French

Domaine(s)
  • Transport aérien

Spanish

Save record 8

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