Then after amplitude limiting, to be preamplified, demodulated, bandpass filtered, the doppler frequency shift signal is extracted.

经过限幅保护，接收放大，检波和带通滤波后，将多普勒频移信号提取出来。

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In this paper, the frequency spectrum and the bandwidth of the frequency shift signal with continuous and discontinuous phase are analyzed.

分析了相位连续与不连续移频信号的频谱并比较了它们的带宽。

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"It will signal a dramatic shift to a cleaner, more sustainable method of providing frequency regulation on the grid," Beacon CEO Bill Capp told the GridWeek conference in Washington last week.

“这是一个巨大的改变，我们可以用更环保、更持续的方法来让电网实现频率的调整。” 灯塔公司首席执行官比尔·凯普上周在华盛顿出席电网周（GridWeek）大会时说道。

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And since a moving object causes a tiny change (known as a Doppler shift) in the frequency of the reflected signal, Silent Sentry can also calculate how fast it is moving.

ECONOMIST: Remote sensing