These signals provide an important reference of the gain of antenna, the time reference, the phase reference and the frequency of carrier wave for generating stimulant echo signal.
这些信号分别为模拟回波信号的生成提供了天线增益大小、时间基准、相位基准和载波频率大小等重要的参考信息。
In order to increase the capacity of channel, the frequency of carrier wave moved to higher endlessly.
为了增加信道容量，载波频段不断地向高频方向移动。
But to the CW pulse signal with changing carrier wave frequency, common filter cannot achieve narrowband filter, whereas broadband filter cannot reach the request of the signal-noise ratio.
可是，对于载波频率不断变化的CW脉冲信号，普通的滤波器难以实现窄带跟踪滤波，而宽带滤波又不能达到提高信噪比的要求。
When designing the circuit the frequency of the carrier wave was chosen as 38K according to the physical property of the infrared sending tube.
根据红外发射管本身的物理特性，选用载波信号的频率为38K，设计制作出一种红外遥控器系统。
This paper organizes discussion around the CW pulse signal. The main problem is how to search and track the CW pulse signal with changing carrier wave frequency.
本文围绕CW脉冲信号开展讨论，其核心内容是如何实现对载波频率不断变化的CW脉冲信号进行搜索和跟踪。
Its carrier wave is a kind of the bearing's inherent vibration with high frequency, and its modulating wave is a pass vibration corresponding to the local defect.
该调幅振动的载波为滚动轴承的某一高频固有振动，而调制波为与缺陷或损伤有关的通过振动。
Its carrier wave is a kind of the bearing's inherent vibration with high frequency, and its modulating wave is a pass vibration corresponding to the local defect.
该调幅振动的载波为滚动轴承的某一高频固有振动，而调制波为与缺陷或损伤有关的通过振动。
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