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земаљска станица

The term used to describe the combination or antenna, low-noise amplifier (LNA), down-converter, and receiver electronics. used to receive a signal transmitted by a satellite. Earth Station antennas vary in size from the.2 foot to 12 foot (65 centimeters to 3.7 meters) diameter size used for TV reception to as large as 100 feet (30 meters) in diameter sometimes used for international communications. The typical antenna used for INTELSAT communication is today 13 to 18 meters or 40 to 60 feet.

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станица

自动化; 工业自动化

An input or output point on a communication system.

гигахерц (GHz)

航空航天; 卫星

One billion cycles per second. Signals operating above 3 Gigahertz are known as microwaves. above 30 GHz they are know as millimeter waves. As one moves above the millimeter waves ...

фреквенција

航空航天; 卫星

The number of times that an alternating current goes through its complete cycle in one second of time. One cycle per second is also referred to as one hertz; 1000 cycles per ...

децибел (dB)

航空航天; 卫星

The standard unit used to express the ratio of two power levels. It is used in communications to express either a gain or loss in power between the input and output devices.

сателит

航空航天; 卫星

A sophisticated electronic communications relay station orbiting 22,237 miles above the equator moving in a fixed orbit at the same speed and direction of the earth (about 7,000 ...

параболична антенаме

航空航天; 卫星

The most frequently found satellite TV antenna, it takes its name from the shape of the dish described mathematically as a parabola. The function of the parabolic shape is to ...

мегахерц (MHz)

航空航天; 卫星

Refers to a frequency equal to one million Hertz, or cycles per second.

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行业/领域：宗教类别普通宗教

анђео чувар

Анђео чувар је анђео додељен за заштиту и води одређену особу или групу, краљевство или земљу. Веровање у анђели чувари могу бити праћени кроз све ...