Aiming at the acquisition problem of direct sequence spread-spectrum (DSSS) signals with large Doppler offset, a new method based on fast Fourier transform (FFT) is proposed.

针对具有大多普勒偏移的直接序列扩频信号捕获问题，提出一种基于快速傅里叶变换(FFT)的多普勒和伪码分别并行搜索的捕获新方法。

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This might include moving them a little further from an open window (just outside the direct rays), or aiming your flash at a nearby wall or ceiling.

这也许包括移动它们有点进一步从开着的窗户外面的光线(直接瞄准你的闪光灯)，或在附近的墙壁或天花板上。

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Aiming at the control accuracy of rotational speed resulting from direct current speed regulation system, a direct current speed regulating system depending on CNC is proposed.

针对直流调速系统对转速的控制精度问题，提出了一种采用CNC的直流调速系统。

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