用射频频谱分析仪观测一个已调波的频谱成分,记录上边带或下边带中各条谱线的幅度值,从而可以根据有关算式计算出调制信号(音频信号)的失真度。
Spectrum of the amplitude-modulated wave is observed by a radio frequency spectrum analyzer and amplitude values of every spectrum are recorded at the upper sideband or lower sideband.
Morrison网络新闻编辑Ken Morrison说,从历史上看每次创出新高后,金价总会出现一波回调。
Ken Morrison, editor of online newsletter Morrison on the Markets, said historically gold has witnessed pullbacks every time it has made a new high.
对线性调频连续波信号和目标回波模拟信号进行了全面的测试分析,完成了波形发生器与整个雷达接收系统的联调。
Measured fully and analyzed effectively CW, LFMCW and simulated echo of object signals, accomplished the debug with the radar system.
毫米波VCO是毫米波应用系统的关键部件之一,FMCW雷达的距离分辨率正比于VCO电调线性度。
The millimeter wave VCO is one of key elements in millimeter wave application systems. The range resolution of the FMCW radar is directly proportional to the VCO tuning linearity.
在平面波近似下,给出了双调Q激光运转的耦合方程组,数值求解方程组得到的理论值与实验结果相符。
The coupled rate equations under the plane-wave approximation are used to simulate the Q-switched process of the laser, and the numerical solutions accord well with the experimental results.
在平面波近似下,给出了双调Q激光运转的耦合方程组,数值求解方程组得到的理论值与实验结果相符。
The coupled rate equations under the plane-wave approximation are used to simulate the Q-switched process of the laser, and the numerical solutions accord well with the experimental results.
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