TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
ARC-SECOND [1 record]
Record 1 - internal organization data 2002-07-16
Record 1, English
Record 1, Subject field(s)
- Metrology and Units of Measure
- Astrophysics and Cosmography
- Navigation Instruments
- Flight Instruments and Equipment (Aeroindustry)
Record 1, Main entry term, English
- arc second
1, record 1, English, arc%20second
correct
Record 1, Abbreviations, English
- arcsec 2, record 1, English, arcsec
correct
Record 1, Synonyms, English
- arc-second 3, record 1, English, arc%2Dsecond
correct
- second of arc 4, record 1, English, second%20of%20arc
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A unit of angular measure in which there are 60 arc seconds in 1 arc minute and therefore 3600 arc seconds in 1 arc degree. One arc second is equal to about 725 km on the Sun. 5, record 1, English, - arc%20second
Record number: 1, Textual support number: 1 CONT
... this new RLG INU [ring laser gyro inertial navigation unit] ... provides navigation performance well within the Air Force Standard Navigator requirements for a strapdown system. The new design expands upon F-15 and Air Force Standard Navigator INU technology. A number of techniques were employed to achieve superior performance. The sensor assembly was redesigned to increase stiffness and reduce coning characteristics. Filtering algorithms were redesigned to reduce noise under 2.5 arc seconds. 6, record 1, English, - arc%20second
Record 1, French
Record 1, Domaine(s)
- Unités de mesure et métrologie
- Astrophysique et cosmographie
- Instruments de navigation
- Instruments et équipement de bord (Constructions aéronautiques)
Record 1, Main entry term, French
- seconde d'arc
1, record 1, French, seconde%20d%27arc
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
En plus de permettre d'atteindre et de maintenir une orbite inhabituelle, le système de contrôle d'altitude et d'orbite doit satisfaire à des exigences de pointage extrêmement sévères, à la fois à court et à long terme : une seconde d'arc sur quinze minutes, et dix secondes d'arc sur six mois. Le satellite est conçu de manière à garantir l'extrême stabilité thermique du module de charge utile nécessaire, afin de maintenir la stabilité de pointage. 2, record 1, French, - seconde%20d%27arc
Record number: 1, Textual support number: 2 CONT
Chaque impulsion représente un déplacement angulaire instantané (un incrément d'angle). L'ordre de grandeur de l'incrément d'un gyrolaser de périmètre 30 cm est d'une seconde d'arc. 3, record 1, French, - seconde%20d%27arc
Record 1, Spanish
Record 1, Textual support, Spanish
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