detector array directivity - перевод на русский
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detector array directivity - перевод на русский

MEASURE OF HOW MUCH OF AN ANTENNA'S SIGNAL IS TRANSMITTED IN ONE DIRECTION
Directive gain; Array Factor; Standard directivity
  • Diagram illustrating how directivity is defined.  It shows the [[radiation pattern]] of a [[directional antenna]] ''<span style="color:gray;">(R, grey)</span>'' that radiates maximum power along the z-axis, and the pattern of an [[isotropic antenna]] ''<span style="color:green;">(R<sub>iso</sub>, green)</span>'' with the same total radiated power. The directivity is defined as the ratio of the maximum signal strength ''S'' radiated by the antenna to the signal strength ''S''<sub>iso</sub> radiated by the isotropic antenna <math display="block">G = {S \over S_\text{iso}}</math>
Since the directional antenna radiates most of its power into a small solid angle around the z-axis its maximum signal strength is much larger than the isotropic antenna which spreads the same power in all directions. Thus the directivity <math>G</math> is much greater than one.
Найдено результатов: 374
detector array directivity      

нефтегазовая промышленность

направленность группы сейсмоприёмников

directive gain         

электроника

коэффициент направленного действия

directivity         

[direk'tiviti]

общая лексика

коэффициент направленности

направленность

направленность антенны

радиотехника

коэффициент защитного действия

Смотрите также

directivity index; directivity pattern; microphone directivity; array directivity; detector array directivity; pattern directivity; seismic directivity; source directivity

существительное

физика

направленность (излучения и т. п.)

smoke alarm         
  • An americium container from a smoke detector
  • An integrated locking mechanism for commercial building doors. Inside an enclosure are a locking device, smoke detector and power supply.
  • Optical smoke detector with the cover removed; the angled plastic in an arc across the top is a light baffle
  • Optical smoke detector<br />1: Optical chamber<br />2: Cover<br />3: Case moulding <br />4: Photodiode (transducer)<br />5: Infrared LED
  • A video overview of how an ionization smoke detector works
  • A 2007 U.S. guide to placing smoke detectors, suggesting that one be placed on every floor of a building, and in each bedroom
  • An addressable Simplex TrueAlarm smoke detector
DEVICE THAT DETECTS SMOKE, TYPICALLY AS AN INDICATOR OF FIRE
Smoke alarm; Smoke detectors; Cigarette Smoke Detector; Smoke alarms; Smoke Detector; Cigarette detector; Smoke detection; Americium smoke detector; Single station smoke detector; Interconnected smoke detector; Standalone smoke detector; Ionization smoke detector; Photoelectric smoke detector; Optical smoke detector

общая лексика

дымовая пожарная сигнализация

ionization smoke detector         
  • An americium container from a smoke detector
  • An integrated locking mechanism for commercial building doors. Inside an enclosure are a locking device, smoke detector and power supply.
  • Optical smoke detector with the cover removed; the angled plastic in an arc across the top is a light baffle
  • Optical smoke detector<br />1: Optical chamber<br />2: Cover<br />3: Case moulding <br />4: Photodiode (transducer)<br />5: Infrared LED
  • A video overview of how an ionization smoke detector works
  • A 2007 U.S. guide to placing smoke detectors, suggesting that one be placed on every floor of a building, and in each bedroom
  • An addressable Simplex TrueAlarm smoke detector
DEVICE THAT DETECTS SMOKE, TYPICALLY AS AN INDICATOR OF FIRE
Smoke alarm; Smoke detectors; Cigarette Smoke Detector; Smoke alarms; Smoke Detector; Cigarette detector; Smoke detection; Americium smoke detector; Single station smoke detector; Interconnected smoke detector; Standalone smoke detector; Ionization smoke detector; Photoelectric smoke detector; Optical smoke detector

строительное дело

ионизационный детектор дыма

dynamic table         
  • Θ(''n'')}} time, labelled with turtles). The ''logical size'' and ''capacity'' of the final array are shown.
RANDOM-ACCESS, VARIABLE-SIZE LIST DATA STRUCTURE THAT ALLOWS ELEMENTS TO BE ADDED OR REMOVED
Growable array; Dynamic table; Array list; ArrayList; Resizable array; Resizeable array; Arraylist; Mutable array

математика

динамическая таблица

smoke detector         
  • An americium container from a smoke detector
  • An integrated locking mechanism for commercial building doors. Inside an enclosure are a locking device, smoke detector and power supply.
  • Optical smoke detector with the cover removed; the angled plastic in an arc across the top is a light baffle
  • Optical smoke detector<br />1: Optical chamber<br />2: Cover<br />3: Case moulding <br />4: Photodiode (transducer)<br />5: Infrared LED
  • A video overview of how an ionization smoke detector works
  • A 2007 U.S. guide to placing smoke detectors, suggesting that one be placed on every floor of a building, and in each bedroom
  • An addressable Simplex TrueAlarm smoke detector
DEVICE THAT DETECTS SMOKE, TYPICALLY AS AN INDICATOR OF FIRE
Smoke alarm; Smoke detectors; Cigarette Smoke Detector; Smoke alarms; Smoke Detector; Cigarette detector; Smoke detection; Americium smoke detector; Single station smoke detector; Interconnected smoke detector; Standalone smoke detector; Ionization smoke detector; Photoelectric smoke detector; Optical smoke detector
детектор дыма
dynamic array         
  • Θ(''n'')}} time, labelled with turtles). The ''logical size'' and ''capacity'' of the final array are shown.
RANDOM-ACCESS, VARIABLE-SIZE LIST DATA STRUCTURE THAT ALLOWS ELEMENTS TO BE ADDED OR REMOVED
Growable array; Dynamic table; Array list; ArrayList; Resizable array; Resizeable array; Arraylist; Mutable array

общая лексика

динамический массив

массив с переменными границами

Смотрите также

array

two-dimensional array         
DATA STRUCTURE
Ragged arrays; Array index; Vector data structure; Array element; Two-dimensional array; One-dimensional array; Vector (Computer Science); Static array; Array data structure; Vector (data structure)

общая лексика

двумерный массив, матрица

в программировании - структура данных, каждый элемент которой адресуется значениями двух индексов: один определяет столбец, а другой - строку расположения данного элемента

нефтегазовая промышленность

двухмерная расстановка

синоним

matrix

Смотрите также

array; index

one-dimensional array         
DATA STRUCTURE
Ragged arrays; Array index; Vector data structure; Array element; Two-dimensional array; One-dimensional array; Vector (Computer Science); Static array; Array data structure; Vector (data structure)

математика

одномерная таблица

Определение

smoke detector

Википедия

Directivity

In electromagnetics, directivity is a parameter of an antenna or optical system which measures the degree to which the radiation emitted is concentrated in a single direction. It is the ratio of the radiation intensity in a given direction from the antenna to the radiation intensity averaged over all directions. Therefore, the directivity of a hypothetical isotropic radiator is 1, or 0 dBi.

An antenna's directivity is greater than its gain by an efficiency factor, radiation efficiency. Directivity is an important measure because many antennas and optical systems are designed to radiate electromagnetic waves in a single direction or over a narrow-angle. By the principle of reciprocity, the directivity of an antenna when receiving is equal to its directivity when transmitting.

The directivity of an actual antenna can vary from 1.76 dBi for a short dipole to as much as 50 dBi for a large dish antenna.

Как переводится detector array directivity на Русский язык