1·At last, an intelligentized testing instrument for electric wire high frequency carrier wave channels is developed.
在此基础上，研制开发出了一套智能化电力线高频载波通道测试装置。
2·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。
3·It can improve the transmission performances of power line carrier wave communication systems.
该改进方案改善了电力线载波通信系统的传输性能。
4·The test result indicates that the phase modulator without transformer can suppress the carrier wave.
实测结果表明，这种无变压器环形相位调制器能较好地抑制载波。
5·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。