所谓数字检波器实际上就是质量指标要求更高的模拟检波器.“数字”二字是因配合数字地震仪的使用而来.由于数字地震仪在一系列质量指标上均大大超过模拟地震仪,为了更有效地发挥数字地震仪的作用,于是对检波器的动态范围、频带范围及非线性失真等项指标都提出了更为严格的要求.非线性失真这项指标在模拟地震勘探时代因矛盾不突出,故未列为检波器的正式质量指标,在检波器的生产和使用中均不对该项指标进行正规检测.因此,至今尚无令人信服的检波器非线性失真测试方法. The so-called digital geophone is actually a higher quality analog geophone. “Digit” is used in conjunction with the digital seismograph. Since digital seismographs outperform analog seismometers in a series of quality indicators, In order to play a more effective role of digital seismometers, more stringent requirements have been set for such indicators as dynamic range, frequency band range, and nonlinear distortion of the detector. Nonlinear distortion Not prominent, it is not listed as the official quality indicators of the detector, the detector in the production and use of this indicator are not formally tested.Therefore, there is no convincing detector nonlinear distortion test method.