Automatic Vertical Alignment of an Absolute Gravimeter by Detecting Displacement of the Measuring Beam

IF 0.3 Q4 GEOCHEMISTRY & GEOPHYSICS

Seismic Instruments Pub Date : 2022-02-01 DOI:10.3103/S074792392201008X

D. A. Nosov, I. S. Sizikov

引用次数: 0

Abstract

An automatic vertical alignment method is presented and analyzed for an absolute laser ballistic gravimeter. The method uses a high-speed video camera to record the displacement trajectory of glare from the measuring beam reflected from a corner reflector when the test body is in free fall. The magnitude and direction of the measuring beam displacement angle from the vertical is determined by frame-by-frame processing of the obtained video, and the vertical of the working gravimeter beam is corrected by actuators installed on the movable supports of the gravimeter base. Experimental verification showed that the vertical alignment error does not exceed 3 × 10^–5 rad.

查看原文本刊更多论文

基于测量光束位移检测的绝对重力仪自动垂直对准

提出并分析了一种用于绝对激光弹道重力仪的自动垂直对准方法。该方法利用高速摄像机记录测试体自由落体时，角反射器反射的测量光束的眩光位移轨迹。通过对获得的视频逐帧处理确定测量光束位移角的大小和方向，并通过安装在重力仪基座活动支架上的致动器对工作重力仪光束的垂直方向进行校正。实验验证表明，垂直对准误差不超过3 × 10-5 rad。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Seismic Instruments GEOCHEMISTRY & GEOPHYSICS-

自引率

44.40%

发文量

期刊介绍： Seismic Instruments is a journal devoted to the description of geophysical instruments used in seismic research. In addition to covering the actual instruments for registering seismic waves, substantial room is devoted to solving instrumental-methodological problems of geophysical monitoring, applying various methods that are used to search for earthquake precursors, to studying earthquake nucleation processes and to monitoring natural and technogenous processes. The description of the construction, working elements, and technical characteristics of the instruments, as well as some results of implementation of the instruments and interpretation of the results are given. Attention is paid to seismic monitoring data and earthquake catalog quality Analysis.