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单词
sky wave
释义
Definition of
sky wave
in English:
sky wave
noun
A radio wave reflected from the ionosphere.
天波
Example sentences
Examples
Regional over the horizon communications are possible through a sky wave technique called tropospheric scatter (troposcatter or just tropo).
It should be mentioned that neither surface waves nor sky waves are possible in space or on airless bodies such as the Moon.
The ground wave is much stronger than the sky wave so softer wave pockets can be found at the closer distances.
The AS2259, near vertical incident sky wave, worked sometimes, but a doublet antenna 10 feet off the ground nearly always worked.
These radio signals are termed sky waves for obvious reason.
At intermediate ranges, the sky wave will be coming in at an appreciable angle and it will be less effected by mountains.
As well as the ground wave, which propagates at all times, at night a sky wave is also propagated via the ionosphere.
Note that some absorption of sky waves may also occur at lower atmospheric levels because of the presence of water and water vapor.
HF has excellent sky wave and good surface wave performance and is good for long range communications, though it is subject to interference.
Fading can also occur on long circuits when sky wave signals take multiple hops to reach the receiver.
Which of the following layers of the Ionosphere has no effect on sky wave propagation during the hours of darkness?
The most important factor that effects the propagation of sky waves is the ionosphere.
Using sky waves it is thus impossible to work on frequencies too away below or above the MUF.
Definition of
sky wave
in US English:
sky wave
noun
A radio wave reflected from the ionosphere.
天波
Example sentences
Examples
The ground wave is much stronger than the sky wave so softer wave pockets can be found at the closer distances.
The most important factor that effects the propagation of sky waves is the ionosphere.
Using sky waves it is thus impossible to work on frequencies too away below or above the MUF.
It should be mentioned that neither surface waves nor sky waves are possible in space or on airless bodies such as the Moon.
At intermediate ranges, the sky wave will be coming in at an appreciable angle and it will be less effected by mountains.
The AS2259, near vertical incident sky wave, worked sometimes, but a doublet antenna 10 feet off the ground nearly always worked.
As well as the ground wave, which propagates at all times, at night a sky wave is also propagated via the ionosphere.
HF has excellent sky wave and good surface wave performance and is good for long range communications, though it is subject to interference.
Regional over the horizon communications are possible through a sky wave technique called tropospheric scatter (troposcatter or just tropo).
Note that some absorption of sky waves may also occur at lower atmospheric levels because of the presence of water and water vapor.
Fading can also occur on long circuits when sky wave signals take multiple hops to reach the receiver.
These radio signals are termed sky waves for obvious reason.
Which of the following layers of the Ionosphere has no effect on sky wave propagation during the hours of darkness?
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更新时间:2025/2/7 10:18:02