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

被引：0

作者：

Nosov, D. A. ^{[1
]}

Sizikov, I. S. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Automat & Electrometry, Siberian Branch, Novosibirsk 630090, Russia

来源：

SEISMIC INSTRUMENTS | 2022年 / 58卷 / 01期

关键词：

absolute gravity measurement; laser ballistic gravimeter; vertical exposure;

D O I：

10.3103/S074792392201008X

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

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 x 10(-5) rad.

引用

页码：11 / 17

页数：7

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