【摘要】 传统的磁电式地震检波器易于受到电磁干扰、存在非线性 ;提出一种应用激光多普勒技术的地震波检测方法 ,采用优化设计的差动光路结构方案、信号处理单元的适宜带宽。通过F/V转换可以实时地得到被测速度、位移、加速度和频率。实现线性测量的频率范围 1 0～ 1 0 0 0Hz ,动态范围 1 0 0dB。更多还原

【Abstract】 The magneto-electric geophone has a few troubles such as electromagnetic interference,penmanent magne t’s non-linearity.A new method of seismic acquisition using laser Doppler effect with an optimized differential optical configuration is proposed.The frequency bandwidth is properly determined by analyzing the frequency of the Doppler signal.The velocity,displacement,acceleration and frequency to be measured can be acquired in real-time by F/V converting the FM Doppler signal.A 100dB dynamic range and the linear frequency range of 1 0 to 1000Hz are realized.更多还原