The test result indicates that for the output frequency of signal resource, the resolution, stability and a series of functions fully realize the scheduled targets.

测试结果表明，信号源输出频率的分辨率、稳定度和一系列功能完全达到预定的指标。

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As a result, a sequence of encoded data stream having a lower number of bit transitions with respect to the frequency of signal transitions of the data stream prior to the encoding is generated.

结果，生成编码后的数据流序列，其相对于编码之前数据流的信号跃迁频率具有更低的位跃迁数目。

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An analog signal is composed of four basic components: DC and AC magnitudes, frequency, and phase.

模拟信号由直流和交流分量、频率和相位四部分组成。

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AM radio can be sent over larger distances, but the quality of the sound is not as good as a later kind of radio signal processing, called frequency modulation.

VOA: special.2010.12.08

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

In an announcement of sorts yesterday, DARPA reportedly said that the project's goal is to use "set of handheld devices" to track down a specific "signal emitter of interest" using radio frequency geolocation, and presumably some other measures they're not about to dish the details on.

ENGADGET: DARPA's "Gandalf" project aims to hone in on cellphones and track 'em

Then through the use of GPS-based reference clocks at each tower (for both time and frequency), the signals are synced so each can emit a perfect copy of both signal and symbol data.

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