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.
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