快捕序列

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研究通讯系统主要的问题在于如何高精度地确定淹没于噪声中的周期信号的相位。通常作为这种用途的信号都是伪随机序列。确实,这种信号在以最小的时间高可靠地求出精确相位时是最佳的,至少在噪声为白噪声或高斯噪声时是如此。然而,设备的局限性,常常影响了这些序列的有效应用。 The main problem with studying communication systems is how to determine the phase of the periodic signal submerged in the noise with high accuracy. The signals that are usually used for this purpose are pseudo-random sequences. Indeed, this signal is best when it comes to finding the exact phase with high reliability in the least amount of time, at least when the noise is white noise or Gaussian noise. However, the limitations of equipment often affect the effective use of these sequences.
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