关键词: 正弦信号, 动态压力校准, 幅值测量, 采样频率

Abstract: The comparison method is usually applied in sinusoidal pressure dynamic calibration, which completes the amplitude calibration by comparing the response of standard sensor with the sensor to be calibrated under the same standard sinusoidal pressure source. By analyzing the data processing of the amplitude of sinusoidal pressure signal, a new algorithm with no systematical error is provided by setting the sampling frequency equal to positive integer times of the signal frequency. With theory analysis and simulation tests，This algorithm has been proved that accuracy of amplitude calibration can be effectively increased.

Key words: Sinusoidal signal, Dynamic calibration, Amplitude measumement, Sampling frequency