The coherence bandwidth of shortwave channel is calculated by using the density profile and wave propagation features in ionosphere.
从该电子密度模式和电离层波传播特性出发确定多径分量，计算短波信道相干带宽。
In this paper, a DSP-based HF channel simulator within audio bandwidth is designed and implemented based on the concerned theory on the effects caused by the ionosphere in radio wave.
根据电离层影响无线电波传输的有关理论，本文设计并实现了一种基于DSP的话音带宽短波信道模拟器。
Short wave is good for broadcasting very long distances. The short wave signals bounce off the ionosphere that surrounds the Earth, back to the ground and then back to the ionosphere.
短波有利于长距离传输广播节目，短波信号被围绕地球的电离层反射，能在大地和电离层间来回反射。
Since the subject of the thesis is about the wave in the ionosphere, it might be essential to perceive and comprehend how the ionosphere influences the wave.
由于课题研究的对象是电离层中传播的电波，所以了解电离层对其间传播的电波的影响是很必要的。
The transmission of the sky wave is realized by the reflection from ionosphere, especially after reflecting many times, to achieve global communication.
天波的传播是利用电离层的反射来实现的，尤其是多次反射后可以实现全球通信。
The ionosphere is a principal factor determining whether or not the wave normal Angle satisfies transmission condition through the ionosphere.
电离层是决定波法线角能否满足透射条件的主要因素。
Due to satellite communication's long channel, far distance transmission and its wave through troposphere and ionosphere often brings the signal deamplification, noise and wrong code.
由于卫星通信信道长，传输距离远，电波要穿过对流层和电离层，易使信号衰减，引入噪声，造成误码。
The equatorial anomaly and the ionosphere greatly affect the arrival latitude of whistler wave at middle and low latitudes.
赤道异常和电离层显著地影响哨声波的到达纬度；
The equipment of the short wave communication for telecommunication is simple and ionosphere can not be easily destroyed by man.
短波远距离通信具有设备简单、电离层不易遭受人为破坏的特点，因此，短波通信具有极其重要的战略地位。
In this paper the transmission property of low latitude whistlers through the lower ionosphere has been investigated by means of full wave technique.
本文利用全波解方法研究了低纬哨声通过低电离层传播的过程。
The ionosphere, an electromagnetic-wave conductor, 100 KMS above the earth, consists of a layer of electrically charged particles acting as a shield from solar winds.
电离层(一种电磁波导体，位于地球上方100公里处)由一层荷电粒子组成，作为一个抵当太阳风的樊篱。
The sky wave over the horizon radar (OTHR) is a new mechanism in which the ionosphere is used as a mirror to reflect the radar high frequency signal to detect the target.
高频天波超视距雷达所独有距离多跳现象，使得位于雷达威力覆盖范围以远的杂波通过地面与电离层的多次反射进入到雷达的接收阵列。
When a radio signal (an electromagnetic wave) propagates into the ionosphere, it might be absorbed, attenuated, refracted, or it might shoot right through and out into space.
当一个无线电信号(电磁波)传播进入电离层时，它也许会被吸收、削弱、折射，或者会穿透并进入太空。
When a radio signal (an electromagnetic wave) propagates into the ionosphere, it might be absorbed, attenuated, refracted, or it might shoot right through and out into space.
当一个无线电信号(电磁波)传播进入电离层时，它也许会被吸收、削弱、折射，或者会穿透并进入太空。
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