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FREQUENCY HOPPING [13 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2023-06-27

English

Subject field(s)
  • Radio Transmission and Reception
  • Military Communications
DEF

Change a transmitted carrier frequency among a set of discrete values from one coherent processing interval to another.

OBS

Frequency hopping is normally used to avoid jamming or detection.

OBS

frequency hop: designation and definition officially approved by the Joint Terminology Panel.

French

Domaine(s)
  • Émission et réception radio
  • Transmissions militaires
DEF

Changer la fréquence porteuse transmise par un dispositif pour la faire passer d'une valeur à une autre, en fonction d'un ensemble de valeurs discrètes, entre un intervalle de traitement cohérent et un autre.

OBS

Le saut de fréquence sert normalement à éviter le brouillage ou la détection.

OBS

sauter de fréquence : désignation et définition uniformisées par le Groupe d'experts en terminologie interarmées.

Spanish

Save record 1

Record 2 2021-08-04

English

Subject field(s)
  • Electronic Warfare
  • Counter-Measures (Military operations)
  • Signals (Military)
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.

OBS

The receiver uses the same code to keep itself in synchronism with the hopping pattern.

OBS

frequency hopping : designation and definition standardized by Federal Standard-1037, 1980(USA)-Glossary of Telecommunication Terms.

OBS

frequency hopping; FH : designations standardized by NATO.

French

Domaine(s)
  • Guerre électronique
  • Contre-mesures (Opérations militaires)
  • Transmissions de campagne (Militaire)
DEF

Technique utilisée en radiocommunication militaire pour éviter l'interception et le brouillage des transmissions radioélectriques en milieu hostile.

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.

DEF

saut de fréquence; SF : désignations normalisées par l'OTAN.

Spanish

Campo(s) temático(s)
  • Guerra electrónica
  • Contramedidas (Operaciones militares)
  • Transmisiones de campaña (Militar)
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.

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).

Key term(s)
  • saltos de frecuencia
Save record 2

Record 3 2019-05-29

English

Subject field(s)
  • Electronic Warfare
  • Signals (Military)
  • IT Security
  • Telecommunications
CONT

The S-400 is an extremely dangerous missile system. Its radars are designed to be resistant to enemy jamming and reportedly use rapid frequency hopping and agile beam steering.

French

Domaine(s)
  • Guerre électronique
  • Transmissions de campagne (Militaire)
  • Sécurité des TI
  • Télécommunications

Spanish

Save record 3

Record 4 - external organization data 2009-07-30

English

Subject field(s)
  • Compartment - ISO/IEC JTC 1 Information Technology Vocabulary
Universal entry(ies)
06.01.33 (19762)
ISO/IEC standard entry number
DEF

frequency at which a frequency hopping spread spectrum(FHSS) system moves between transmission frequencies, equal to the reciprocal of the dwell time at a FHSS centre frequency

OBS

frequency hop rate: term and definition standardized by ISO/IEC [ISO/IEC 19762-4:2008].

French

Spanish

Save record 4

Record 5 - external organization data 2009-07-30

English

Subject field(s)
  • Compartment - ISO/IEC JTC 1 Information Technology Vocabulary
Universal entry(ies)
06.01.35 (19762)
ISO/IEC standard entry number
DEF

pseudo-random binary sequence(PRBS) determining the hopping frequencies used in frequency hopping spread spectrum(FHSS) systems

OBS

frequency hop sequence: term and definition standardized by ISO/IEC [ISO/IEC 19762-4:2008].

French

Spanish

Save record 5

Record 6 - external organization data 2009-07-30

English

Subject field(s)
  • Compartment - ISO/IEC JTC 1 Information Technology Vocabulary
Universal entry(ies)
06.01.32 (19762)
ISO/IEC standard entry number
DEF

form of spread spectrum modulation in which the carrier frequency is automatically changed at short intervals, selection being made in a pseudo-random way from a set of frequencies covering a frequency band much wider than the bandwidth required for the information to be transmitted

OBS

Adapted from IEC 50 (725), 725-14-32.

OBS

frequency hopping spread spectrum modulation; FHSS : term, abbreviation and definition standardized by ISO/IEC [ISO/IEC 19762-4 : 2008].

French

Spanish

Save record 6

Record 7 - external organization data 2009-07-30

English

Subject field(s)
  • Compartment - ISO/IEC JTC 1 Information Technology Vocabulary
Universal entry(ies)
06.01.34 (19762)
ISO/IEC standard entry number
DEF

inverse of the dwell time at a given FHSS hopping frequency

OBS

hop rate: term and definition standardized by ISO/IEC [ISO/IEC 19762-4:2008].

French

Spanish

Save record 7

Record 8 2004-04-22

English

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

A modulation technique used to widen the RF bandwidth of a signal.

OBS

Common types of SS modulation include frequency hopping, direct sequence, time hopping, and hybrid modulation.

French

Domaine(s)
  • Radar, radioguidage et radiogoniométrie
DEF

Technique de transmission dans laquelle la puissance du signal émis est répartie sur une largeur de bande beaucoup plus grande que celle strictement nécessaire à la transmission des informations.

OBS

La modulation à spectre étalé permet l'accès multiple à une voie de transmission et accroît l'immunité au bruit et au brouillage radioélectriques, ainsi que la confidentialité.

Spanish

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

Sistema de modulación que utiliza una estructura de señal con características de ruido secuencial, por ejemplo, códigos de pseudoruido, para extender la señal de información normalmente de banda estrecha sobre una banda de frecuencias relativamente ancha.

OBS

El receptor correlaciona estas señales para recuperar la señal de información original.

Key term(s)
  • modulación SS
Save record 8

Record 9 1999-10-04

English

Subject field(s)
  • Signals (Military)
  • Air Communications (Air Forces)
  • Radio Transmission and Reception
CONT

The Ale upgrade is part of a performance options package that also includes frequency hopping and digitized voice capabilities, while data and digital voice encryption as well as analogue voice security are covered under a separate option.

French

Domaine(s)
  • Transmissions de campagne (Militaire)
  • Communications aériennes (Forces aériennes)
  • Émission et réception radio
CONT

La prise de liaison fait partie d'un bouquet d'options qui comportent aussi le saut de fréquence et la phonie numérique.

Spanish

Save record 9

Record 10 1994-12-19

English

Subject field(s)
  • Signals (Military)
  • Air Communications (Air Forces)
  • Radio Transmission and Reception
CONT

The Ale upgrade is part of a performance options package that also includes frequency hopping and digitized voice capabilities, while data and digital voice encryption as well as analogue voice security are covered under a separate option.

French

Domaine(s)
  • Transmissions de campagne (Militaire)
  • Communications aériennes (Forces aériennes)
  • Émission et réception radio
CONT

La prise de liaison fait partie d'un bouquet d'options qui comportent aussi le saut de fréquence et la phonie numérique.

Spanish

Save record 10

Record 11 1989-03-14

English

Subject field(s)
  • Telegraph Codes
  • Codes (Software)
CONT

Another scheme makes use of a direct-sequence code-requiring a shift-register coder-or a combination of direct-sequence code and frequency hopping.

French

Domaine(s)
  • Codes télégraphiques
  • Codes (Logiciels)

Spanish

Save record 11

Record 12 1989-02-08

English

Subject field(s)
  • Telecommunications Facilities
  • Handwriting Analysis and Cryptography
  • Security Devices
CONT

The high security of the cryptographic key generator allows private frequency hopping sequences to be used between pairs or groups of userstations separately from and simultaneously with the main net.

French

Domaine(s)
  • Installations de télécommunications
  • Graphologie et cryptographie
  • Dispositifs de sécurité

Spanish

Save record 12

Record 13 1982-10-05

English

Subject field(s)
  • Telecommunications Transmission
  • Radio Waves
OBS

The result is Jaguar-V, the world's first frequency-hopping tactical radio.(...) Based on the principle of hopping its transmitted frequency around the spectrum many times a second, Jaguar-V maintains intelligible communication in the face of severe ECM-even with a third of the available channels occupied by other signals.

French

Domaine(s)
  • Transmission (Télécommunications)
  • Ondes radioélectriques
OBS

Ce programme a donné naissance à la Jaguar-V, la première au monde des radios militaires à sauts de fréquence (...) Utilisant la technique qui consiste à faire varier la fréquence d'émission de nombreuses fois par seconde dans l'étendue du spectre, la Jaguar-Vasure l'intelligibilité des télécommunications en présence de contre-mesures électroniques intenses-même si un tiers des canaux disponibles est occupé par d'autres signaux.

Spanish

Save record 13

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