TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

[Global navigation satellite system(GNSS) ] positioning is affected by various measurement errors, such as ionospheric delay, tropospheric delay, and multipath effect. In addition, the GNSS signal is weak[;] it comes from 20, 000 to 30, 000 km away and is vulnerable to unintentional radio frequency interference or malicious interference(jamming and spoofing)... Therefore, it is of great significance to enhance the reliability and positioning accuracy of GNSS by other means... Many studies consider using signals of opportunity(SOP) for positioning when GNSS is unavailable or unreliable. These SOP include digital television[, ] Bluetooth[, low earth orbit(LEO), ] Wi-Fi[, ] vision[, ] 5 G [(fifth generation), ] and so on.  3, record 1, English, - opportunity%20signal

Record number: 1, Textual support number: 1 OBS

opportunity signal; signal of opportunity: designations usually used in the plural.  5, record 1, English, - opportunity%20signal

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 OBS

signal d'opportunité : désignation habituellement utilisée au pluriel.  2, record 1, French, - signal%20d%27opportunit%C3%A9

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

A ground facility that emits a test signal to check VHF [very high frequency] omnidirectional range(VOR) receiver accuracy.  2, record 2, English, - VOR%20receiver%20test%20facility

Record number: 2, Textual support number: 1 OBS

VOR receiver test facility; VOT: term, abbreviation and definition standardized by the Glossary for Pilots and Air Traffic Services Personnel Committee.  3, record 2, English, - VOR%20receiver%20test%20facility

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 DEF

Installation au sol qui émet un signal pour vérifier la précision du récepteur VOR [radiophare omnidirectionnel VHF (très haute fréquence)].  1, record 2, French, - syst%C3%A8me%20de%20v%C3%A9rification%20de%20r%C3%A9cepteur%20VOR

Record number: 2, Textual support number: 1 OBS

appareil de vérification du récepteur VOR; VOT : terme et abréviation uniformisés par le Comité d'uniformisation de la terminologie aéronautique (CUTA) - Opérations aériennes.  3, record 2, French, - syst%C3%A8me%20de%20v%C3%A9rification%20de%20r%C3%A9cepteur%20VOR

Record number: 2, Textual support number: 2 OBS

système de vérification de récepteur VOR; VOT : terme, abréviation et définition normalisés par le Comité sur le Glossaire à l'intention des pilotes et du personnel des services de la circulation aérienne.  4, record 2, French, - syst%C3%A8me%20de%20v%C3%A9rification%20de%20r%C3%A9cepteur%20VOR

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

A long-range radio aid to navigation, the emissions of which, by means of their radio frequency modulation characteristics, enable bearings to be determined.  4, record 3, English, - Consol%20beacon

Record number: 3, Textual support number: 1 CONT

A Consol beacon broadcasts on a medium frequency a pattern of dots and dashes, and by listening to this pattern on an ordinary ship or aircraft wireless receiver a navigator can determine his bearing from the beacon with a much greater accuracy than is possible with a D/F [direction finder] loop. The accuracy of the bearings obtained depends on the bearing of the observer from the beacon; it is greatest along a line called the normal of the beacon and decreases until it is zero along a line at right angles to the normal.  5, record 3, English, - Consol%20beacon

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 CONT

Le «Consol» est un radiophare tournant et à grande précision fonctionnant en basses et moyennes fréquences et dont les indications peuvent être reçues sur un récepteur ordinaire.  4, record 3, French, - radiophare%20Consol

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 CONT

European Payload. [The core of the] ACES(Atomic Clock Ensemble in Space) [project] is a laser-cooled caesium atomic clock(Pharao), which exploits the microgravity conditions onboard the Space Station... Pharao will improve clock frequency stability and accuracy by a factor of 100 compared with the best measurements currently achievable on Earth, opening up new opportunities in various fields of fundamental research and applications. This ultra-precise measurement of time will allow relativistic measurements and tests, applications in atmospheric physics and geodesy, navigation and advanced telecommunications.  3, record 4, English, - Pharao

Record number: 4, Textual support number: 1 OBS

Pharao; laser-cooled caesium atomic clock: terms officially approved by the International Space Station official approval Group (ISSOAG).  4, record 4, English, - Pharao

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 CONT

Pour tester la Relativité générale dans le système solaire, le CNES [Centre national d'études spatiales] développera d'abord de nouveaux outils de métrologie temps - fréquence (tels que ceux du projet d'horloge atomique à atomes refroidis PHARAO, installé en 2005 sur la station spatiale et dont l'exactitude et la stabilité atteindront 10-16 par jour), ainsi que des techniques de transfert de temps ultra précis.  6, record 4, French, - Pharao

Record number: 4, Textual support number: 1 OBS

Pharao; horloge atomique à atomes refroidis : termes uniformisés par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI).  7, record 4, French, - Pharao

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 CONT

Since the NDB is a low frequency, amplitude modulated radio station; it is subject to atmospheric disturbances that effect range and bearing accuracy. These can be lightning, precipitation static and sunspot activity.  3, record 5, English, - subject%20to%20atmospheric%20disturbances

Record number: 5, Textual support number: 2 CONT

Radio is also subject to atmospheric disturbances. It produces static, and its signals tend to fade.  4, record 5, English, - subject%20to%20atmospheric%20disturbances

Record number: 5, Textual support number: 3 CONT

Air quality research is an important focus of the research units across the Interior Western U.S. Research areas include: understanding changes in alpine and forest ecosystems subject to atmospheric disturbances, such as air pollution, with emphasis on wilderness area impacts.  5, record 5, English, - subject%20to%20atmospheric%20disturbances

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 CONT

[...] bien que disposant d'une radio [...] pour écouter les OC je préfère les écouter sur Internet, la qualité est bien meilleure et on n'est pas sujet aux perturbations atmosphériques.  1, record 5, French, - sujet%20aux%20perturbations%20atmosph%C3%A9riques

Record 5,  Textual support,  Spanish

Record number: 5, Textual support number: 1 CONT

Las transmisiones radiales estaban sujetas a perturbaciones atmosféricas puesto que las ondas, en su desplazamiento, chocaban con la ionósfera de donde rebotaban para volver a la tierra.  1, record 5, Spanish, - sujeto%20a%20perturbaciones%20atmosf%C3%A9ricas

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 CONT

The concept of a dynamic amplification factor (DAF) is used to describe the ratio between the maximum load effect when a bridge is loaded dynamically, and the maximum load effect when the same load is applied statically to the bridge.  2, record 6, English, - dynamic%20amplification%20factor

Record number: 6, Textual support number: 2 CONT

The dynamic amplification factor(DAF) is an important parameter in the design of highway bridges and yet no worldwide consensus has been reached so far as to its value. Some disagreement exists between provisions of various national bridge codes. This is because the DAF depends, in addition to the maximum span or the natural frequency, on many other parameters that are difficult to take into account with reasonable accuracy. Vehicle speed, weight, and dynamic characteristics, the state of the structure, roadway roughness, expansion joints, the type of bridge supports, soil-structure interaction, and influence of secondary elements are some aspects influencing the DAF. This study reviews the analytical and experimental findings on bridge dynamics and the evaluation of the DAF.  3, record 6, English, - dynamic%20amplification%20factor

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 CONT

Le facteur d'amplification dynamique (FAD) est un paramètre important dans la conception des ponts routiers. Pourtant il n'existe, jusqu'à maintenant, aucun consensus international quant à sa valeur, et certaines divergences existent entre les recommandations de différentes normes nationales de calcul de ponts. Ceci est dû au fait que le FAD dépend, en plus de la portée et de la fréquence propre, de plusieurs autres paramètres qui sont difficiles à isoler. La vitesse, le poids et les caractéristiques dynamiques du véhicule, l'état de la structure, l'étendue des imperfections de la planéité de la chaussée, l'état des joints de dilatation, les types d'appuis, l'interaction sol-structure, l'influence des éléments secondaires, sont quelques aspects influençant le FAD. Cette étude présente une revue des recherches théoriques et expérimentales sur la dynamique des ponts et l'évaluation du FAD.  1, record 6, French, - facteur%20d%27amplification%20dynamique

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 DEF

Term used to describe a receiver capable of receiving both the L1 and L2 signal from the satellite.  2, record 7, English, - dual%20frequency

Record number: 7, Textual support number: 1 CONT

It is hard to generalize on the accuracy of GPS [global positioning system] since it is highly dependent on the type of receiver being used. There are, however, many factors that can improve accuracies such as whether the receiver uses single or dual frequency, differential corrections, and multipath mitigation.  3, record 7, English, - dual%20frequency

Record number: 7, Textual support number: 1 OBS

Definition provided by the Canadian Hydrographic Service.  2, record 7, English, - dual%20frequency

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 DEF

Terme qualifiant un récepteur permettant de capter les signaux L1 et L2 émis par les satellites.  1, record 7, French, - bifr%C3%A9quence

Record 7,  Textual support,  Spanish

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 CONT

The GTEM Cell enables users to perform radiated emissions and radiated immunity tests of small and medium-sized EUTs [equipment under test]. The advantages are a wide frequency range from DC up to 18 GHz, highly homogenous fields, good repeatability, high level of accuracy, low costs for installation and servicing and others.  4, record 8, English, - GTEM%20cell

Record 8,  Textual support,  French

Record number: 8, Textual support number: 1 CONT

Dans le cadre des études sur l'émission et la susceptibilité des circuits intégrés aux champs électromagnétiques, le LESIA [Laboratoire d'Études Spatiales et d'Instrumentation en Astrophysique] vient de réceptionner une cellule GTEM, qui permet des mesures du comportement des circuits dans une chambre blindée jusqu'à 18GHz.  2, record 8, French, - cellule%20GTEM

Record 8,  Textual support,  Spanish

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 DEF

Energy emissions resulting from the generation of hydromagnetic waves in the outer atmosphere.  1, record 9, English, - hydromagnetic%20emission

Record number: 9, Textual support number: 1 CONT

Subsequent substorm onsets are accompanied by the sudden expansion of active aurora and westward electrojet to the evening side. Simultaneously(with an accuracy of 30-60 s) in midday-evening sector at L=4-5 the eastward electrojet is sharply intensificated, center of electrojet moves to the equator and the excitation of 0, 2-1, 5 Hz hydromagnetic emissions with continuous or discrete growth of oscillation frequency are occurred.  2, record 9, English, - hydromagnetic%20emission

Record number: 9, Textual support number: 1 OBS

hydromagnetic emission: term usually used in the plural (hydromagnetic emissions).  3, record 9, English, - hydromagnetic%20emission

Record 9,  Textual support,  French

Record number: 9, Textual support number: 1 DEF

Émissions d'énergie résultant de la production d'ondes hydromagnétiques dans l'atmosphère extérieure.  1, record 9, French, - %C3%A9mission%20hydromagn%C3%A9tique

Record number: 9, Textual support number: 1 OBS

émission hydromagnétique : terme généralement utilisé au pluriel (émissions hydromagnétiques).  2, record 9, French, - %C3%A9mission%20hydromagn%C3%A9tique

Record 9,  Textual support,  Spanish

Record number: 9, Textual support number: 1 DEF

Emisiones de energía que resultan de la generación de ondas hidromagnéticas en la atmósfera exterior.  1, record 9, Spanish, - emisi%C3%B3n%20hidromagn%C3%A9tica

Record 10,  Textual support,  English

Record number: 10, Textual support number: 1 CONT

Ultra wideband broadcasts digital pulses that are timed very precisely on a carrier signal across a very wide spectrum(number of frequency channels) at the same time. Transmitter and receiver must be coordinated to send and receive pulses with an accuracy of trillionths of a second. On any given frequency band that may already be in use, the ultra wideband signal has less power than the normal and anticipated background noise so theoretically no interference is possible.  1, record 10, English, - ultra%20wideband%20signal

Record 10,  Textual support,  French

Record 10,  Textual support,  Spanish

Record 11,  Textual support,  English

Record number: 11, Textual support number: 1 CONT

The Atomic Clock Ensemble in Space (ACES) is a programme to test the performance of a new type of clock that exploits and depends upon microgravity conditions. It consists of four key elements: a laser-cooled atomic clock; a hydrogen maser; a laser link for optical transfer of time and frequency; a microwave link for transfer of time and frequency.  2, record 11, English, - atomic%20clock%20ensemble%20in%20space

Record number: 11, Textual support number: 1 OBS

The atomic clock experiments are expected to improve the accuracy by a factor of 100 as compared to terrestrial atomic clocks. The ultra-precise time measurement will promote relativistic measurements and tests, and applications in atmospheric physics, geodesy, navigation and advanced telecommunications, as well as serve as a universal time and frequency reference from space.  3, record 11, English, - atomic%20clock%20ensemble%20in%20space

Record number: 11, Textual support number: 2 OBS

atomic clock ensemble in space; ACES: term and abbreviation officially approved by the International Space Station official approval Group (ISSOAG).  4, record 11, English, - atomic%20clock%20ensemble%20in%20space

Record 11,  Textual support,  French

Record number: 11, Textual support number: 1 CONT

En avril 1997 PHARAO a été soumis à l'Agence spatiale européenne (ESA) dans le cadre d'une mission plus large appelée ACES (Atomic Clock Ensemble in Space). Son principe est de mettre à bord de la Station spatiale internationale (ISS) un ensemble comprenant des horloges ultra-stables et des méthodes de transfert temps/fréquences performantes. Dans la configuration de base de ACES, les deux horloges retenues sont PHARAO et un maser à hydrogène fourni par l'Observatoire de Neuchâtel (Suisse). Le transfert de temps est réalisé par un lien optique utilisant des impulsions laser très brèves (T2L2, fourni par l'Observatoire de la Côte d'Azur) et également par un lien dans le domaine micro-onde qui, lui, peut fonctionner par toutes conditions atmosphériques. En décembre 1997, la mission ACES [sera] montée sur une palette EXPRESS de la station spatiale en juin 2005.  2, record 11, French, - ensemble%20d%27horloges%20atomiques%20dans%20l%27espace

Record number: 11, Textual support number: 1 OBS

ensemble d'horloges atomiques dans l'espace; ACES : terme et abréviation uniformisés par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI).  3, record 11, French, - ensemble%20d%27horloges%20atomiques%20dans%20l%27espace

Record 11,  Textual support,  Spanish

Record 12,  Textual support,  English

Record number: 12, Textual support number: 1 CONT

... the required accuracy of pointing of Earth-station antennas increases with frequency.  1, record 12, English, - pointing

Record 12,  Textual support,  French

Record number: 12, Textual support number: 1 CONT

[...] il sera nécessaire que les aériens à terre conservent leur direction de pointage initiale.  3, record 12, French, - pointage

Record 12,  Textual support,  Spanish

Record 13,  Textual support,  English

Record number: 13, Textual support number: 1 CONT

Any electrical or electronic components, equipment or accessories attached to or used in conjunction with a machine that have or can have an effect on the accuracy of the machine shall function properly despite such steady-state and transient variations in the frequency, voltage and waveform of the electrical supply and disturbances in the surrounding electromagnetic and electrostatic field as may normally exist in the intended service.  2, record 13, English, - electrical%20component

Record number: 13, Textual support number: 1 OBS

Consolidation of the Weights and Measures Regulations, March 1990, s. 124, see also s. 141.  2, record 13, English, - electrical%20component

Record 13,  Textual support,  French

Record number: 13, Textual support number: 1 CONT

Lorsqu'un appareil a des composants électriques ou comporte du matériel ou des accessoires électriques qui influent ou peuvent influer sur l'exactitude de l'appareil, il doit être branché sur le courant électrique conformément aux prescriptions du fabricant de l'appareil.  3, record 13, French, - %C3%A9l%C3%A9ment%20%C3%A9lectrique

Record number: 13, Textual support number: 1 OBS

élément électrique : Consolidation des Règlements sur les poids et mesures, mars 1990, art. 124.  4, record 13, French, - %C3%A9l%C3%A9ment%20%C3%A9lectrique

Record number: 13, Textual support number: 2 OBS

composant électrique : Consolidation des Règlements sur les poids et mesures, mars 1990, art. 141  3, record 13, French, - %C3%A9l%C3%A9ment%20%C3%A9lectrique

Record 13,  Textual support,  Spanish

Record 14,  Textual support,  English

Record number: 14, Textual support number: 1 DEF

A requirement that specifies a performance characteristic that a system or system component must possess; for example, speed, accuracy, frequency.  1, record 14, English, - performance%20requirement

Record number: 14, Textual support number: 1 CONT

Pilot run product testing ... must do more than establish the product meets applicable industry standards. It must also meet or exceed the performance requirements set when the project originated.  3, record 14, English, - performance%20requirement

Record number: 14, Textual support number: 2 CONT

... to be satisfactory, the design must meet the required performance specifications. ... A common failing in problem definition is to overemphasize the specification of ... performance parameters ... [ rather than] the functions the design should have....  4, record 14, English, - performance%20requirement

Record number: 14, Textual support number: 1 OBS

A "performance requirement" is not a "functional requirement". See the record for this latter term.  5, record 14, English, - performance%20requirement

Record 14,  Textual support,  French

Record number: 14, Textual support number: 1 DEF

Exigence qui spécifie une caractéristique de performance que doit posséder un système ou un élément de système; par exemple, la vitesse, l'exactitude, la fréquence.  1, record 14, French, - exigence%20de%20performance

Record number: 14, Textual support number: 1 CONT

Les spécifications du produit sont les performances que devra avoir le produit tout au long de sa vie.  2, record 14, French, - exigence%20de%20performance

Record 14,  Textual support,  Spanish

Record number: 14, Textual support number: 1 DEF

Valor, condición o criterio operativo que define la operación aceptable de un sistema y subsistemas de computadora (ordenador).  2, record 14, Spanish, - requisito%20de%20la%20ejecuci%C3%B3n

Record number: 14, Textual support number: 1 OBS

El sistema de computadora debe llenar los requisitos mínimos para el tiempo de respuesta en línea, tiempo de operaciones y tamaño de los registros o archivos (ficheros).  3, record 14, Spanish, - requisito%20de%20la%20ejecuci%C3%B3n

Record 15,  Textual support,  English

Record number: 15, Textual support number: 1 OBS

frequency accuracy : term officially approved by the International Civil Aviation Organization(ICAO).  2, record 15, English, - frequency%20accuracy

Record 15,  Textual support,  French

Record number: 15, Textual support number: 1 OBS

précision des fréquences : terme uniformisé par l'Organisation de l'aviation civile internationale (OACI).  2, record 15, French, - pr%C3%A9cision%20des%20fr%C3%A9quences

Record 15,  Textual support,  Spanish

Record number: 15, Textual support number: 1 OBS

precisión de frecuencia : término aceptado oficialmente por la Organización de Aviación Civil Internacional (OACI).  2, record 15, Spanish, - precisi%C3%B3n%20de%20frecuencia

Record 16,  Textual support,  English

Record number: 16, Textual support number: 1 DEF

The highest level of military dynamic positioning accuracy that will be provided by GPS, based on the dual frequency P-code and having high anti-jamming and anti-spoofing qualities.  1, record 16, English, - precise%20positioning%20service

Record number: 16, Textual support number: 1 OBS

Term and definition provided by the Canadian Hydrographic Service.  1, record 16, English, - precise%20positioning%20service

Record 16,  Textual support,  French

Record number: 16, Textual support number: 1 DEF

Positionnement dynamique militaire de la plus grande exactitude que permettra le GPS d'après le code-P émis sur les deux fréquences et présentant de bonnes qualités anti-brouillage et anti-intrusion.  1, record 16, French, - service%20de%20positionnement%20pr%C3%A9cis

Record 16,  Textual support,  Spanish

Record 17,  Textual support,  English

Record number: 17, Textual support number: 1 CONT

The application of high frequency dielectric magnetic fields on thermal textile processes is profiled. Methods and machinery for application are examined. The accuracy of temperature control and increased energy and processing efficiency in drying, nonwoven production, fiber modification, and texturing are noted.(Source : Jonash P. ;Blanka R.,(Wool Res Inst-Brno) Textil, 40, no. 2 : 53-55, February 1985).  1, record 17, English, - thermal%20textile

Record 17,  Textual support,  French

Record number: 17, Textual support number: 1 CONT

Fibre thermique Thermotron. Le japonais Unitika se déclare confiant dans le développement des textiles thermiques. Précurseur dans ce domaine avec sa fibre Thermotron, il dispose aujourd'hui d'une capacité de production de 1 000 tonnes par an (...).  1, record 17, French, - textile%20thermique

Record 17,  Textual support,  Spanish

Record 18,  Textual support,  English

Record number: 18, Textual support number: 1 CONT

In this instrument, used to measure gas flows, a swirl is imparted to the flowing fluid by a fixed set of radial vanes. As this swirl goes into an expanding tube, it forms a precessing vortex that is detected by a heated thermistor sensor. The frequency of the precession is claimed to be proportional to the volumetric flow rate within an accuracy of 0. 75%.  1, record 18, English, - vortex%2Dprecession%20flowmeter

Record 18,  Textual support,  French

Record number: 18, Textual support number: 1 OBS

[Les débitmètres à vortex ou compteurs à tourbillons] utilisent l'effet vortex qui se produit naturellement lorsqu'un fluide en écoulement turbulent heurte un obstacle non profilé.  2, record 18, French, - d%C3%A9bitm%C3%A8tre%20%C3%A0%20vortex%20de%20pr%C3%A9cession

Record number: 18, Textual support number: 2 OBS

VOIR précession  1, record 18, French, - d%C3%A9bitm%C3%A8tre%20%C3%A0%20vortex%20de%20pr%C3%A9cession

Record 18,  Textual support,  Spanish

Record 19,  Textual support,  English

Record number: 19, Textual support number: 1 DEF

An emission which disseminates one or more standard frequencies at regular intervals with a specified average daily frequency accuracy.  1, record 19, English, - standard%2Dfrequency%20emission

Record 19,  Textual support,  French

Record number: 19, Textual support number: 1 DEF

Émission qui diffuse une ou plusieurs fréquences étalon à intervalles réguliers, avec une exactitude de fréquence spécifiée par sa moyenne journalière.  1, record 19, French, - %C3%A9mission%20de%20fr%C3%A9quences%20%C3%A9talon

Record 19,  Textual support,  Spanish

Record 20,  Textual support,  English

Record number: 20, Textual support number: 1 OBS

[The automatic receiver's] high frequency setting accuracy is achieved by means of a particularly fast-switching multiple-loop phase-locked synthesizer(PLL) the frequency of which is quasi-continuously variable in steps of 100 Hz or multiples of 100 Hz.  1, record 20, English, - multiple%2Dloop%20phase%2Dlocked%20synthesizer

Record 20,  Textual support,  French

Record number: 20, Textual support number: 1 OBS

La grande précision de calage des fréquences est obtenue au moyen d'un synthétiseur à verrouillage de phase à boucles multiples assurant une commutation particulièrement rapide, dont la fréquence peut varier de façon quasi continue, par pas de 100 Hz ou par multiples de 100 Hz.  1, record 20, French, - synth%C3%A9tiseur%20%C3%A0%20verrouillage%20de%20phase%20%C3%A0%20boucles%20multiples

Record 20,  Textual support,  Spanish

Record 21,  Textual support,  English

Record number: 21, Textual support number: 1 OBS

Decca's low frequency area coverage provides position accuracy to within a few yards right down to the ground.  1, record 21, English, - low%20frequency%20area%20coverage

Record 21,  Textual support,  French

Record number: 21, Textual support number: 1 OBS

La couverture de zone ... de Decca permet de déterminer la position à quelques mètres près jusqu'au voisinage du sol.  2, record 21, French, - couverture%20de%20zone%20en%20basse%20fr%C3%A9quence

Record 21,  Textual support,  Spanish