The square wave source is an impulse source in which digital technique is used. It has the advantages of rigid phase, high frequency stabilization and high antijamming.

方波电源是采用数字技术的脉冲电源，具有相位严格、频率稳定度高，抗干扰能力强等独特的优点。

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In this paper, a dynamic calibration method using a finite duration impulse excitation source is presented, which can be used to calibrate the frequency response of high-pressure transducers (HPT).

本文提出了用任意时限脉冲作激励源的一种动态校准方法，用于校准动压传感器的频响特性。

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According to features of power quality disturbance signal, this paper detects the disturbance signals of high-frequency, transient impulse and voltage notch with wavelet transforming.

针对电能质量扰动信号的特性，本文采用小波变换对电力系统的高频、瞬时脉冲、电压切痕扰动信号进行检测。

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