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PSEUDO-BRUIT [2 records]
Record 1 - internal organization data 1998-08-21
Record 1, English
Record 1, Subject field(s)
- Telecommunications
Record 1, Main entry term, English
- pseudo-noise 1, record 1, English, pseudo%2Dnoise
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
Noise that satisfies one or more of the standard tests for statistical randomness. 3, record 1, English, - pseudo%2Dnoise
Record number: 1, Textual support number: 1 OBS
Although it seems to lack any definite pattern, pseudorandom noise contains a sequence of pulses that repeat themselves, albeit after a long time or a long sequence of pulses. 3, record 1, English, - pseudo%2Dnoise
Record number: 1, Textual support number: 1 CONT
For example, in spread-spectrum systems, modulated carrier transmissions appear as pseudorandom noise to a receiver (a) that is not locked on the transmitter frequencies or (b) that is incapable of correlating a locally generated pseudorandom code with the received signal. 3, record 1, English, - pseudo%2Dnoise
Record 1, French
Record 1, Domaine(s)
- Télécommunications
Record 1, Main entry term, French
- pseudo-bruit
1, record 1, French, pseudo%2Dbruit
masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Telecomunicaciones
Record 1, Main entry term, Spanish
- ruido seudoaleatorio
1, record 1, Spanish, ruido%20seudoaleatorio
masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 1982-11-15
Record 2, English
Record 2, Subject field(s)
- Aeroindustry
Record 2, Main entry term, English
- pseudo-noise
1, record 2, English, pseudo%2Dnoise
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
By contrast, the performance of an FM system deteriorates rapidly after falling below a certain threshold. Phase-modulated signals, when properly processed, require less bandwidth and can be coded using pseudo-noise and spread-spectrum techniques, thus reducing the chance of enemy detection. 1, record 2, English, - pseudo%2Dnoise
Record 2, French
Record 2, Domaine(s)
- Constructions aéronautiques
Record 2, Main entry term, French
- pseudo-bruit 1, record 2, French, pseudo%2Dbruit
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 CONT
Les ingénieurs de Hughes ont découvert qu'avec cette méthode l'image de télévision s'affaiblit graduellement à mesure qu'augmente l'intensité du signal de brouillage, alors que les performances d'un système utilisant la technique FM se dégradent rapidement lorsqu'elles sont tombées au-dessous d'un certain seuil. Les signaux modulés en phase, lorsqu'ils sont convenablement traités, exigent une moins grande largeur de bande et peuvent être codés au moyen des techniques de pseudo-bruit et d'étalement de spectre, ce qui diminue les risques de détection par l'ennemi. 1, record 2, French, - pseudo%2Dbruit
Record 2, Spanish
Record 2, Textual support, Spanish
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