本文介绍了一种根据冲击测量系统的方波响应和输出波形，利用FFT算法重建输入波形的方法。
This paper presents the input voltage shape reconstructed by FFT method from the distorted output shape and unit step response of impulse high voltage measuring system.
成像装置通常使用方波图卡的分辨率与振幅响应（AR）表达。
Resolution of imaging device on using a square-wave chart is generally expressed with Amplitude Response(AR).
分析了高导磁环形镍铁合金线圈在方波电压下的工作过程，论证了这种线圈构成的电压传感器有极快的响应时间；
This paper analyzes operation process of high magnet conductive loop Ni Fe alloy coil under square wave voltage. By analysis, this kind of voltage sensor is proved to have fast response time.
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