Abstract

A laser heterodyne system for recording of small shifts and vibrations of remote objects is presented. The use of additional compensation interferometer makes it possible to compensate the influence of environmental fluctuations on the measurement results. The registration results of seismic vibrations for various setup configuration are shown. The experiments indicate the reducing of perturbations of the air refractive index and laser frequency instability by implementing both hardware and software compensation of instabilities.

中文翻译：

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外差式干涉仪测量中大气非平稳性的补偿方法

摘要

提出了一种激光外差系统，用于记录远程物体的小位移和振动。使用附加的补偿干涉仪可以补偿环境波动对测量结果的影响。显示了各种设置配置下的地震振动记录结果。实验表明，通过实现不稳定性的硬件和软件补偿，可以减少空气折射率的扰动和激光频率不稳定性。