Концепция баллистического лазерного гравиметра с индукционно-динамической катапультой и уменьшеным влиянием автосейсмического эффекта

Abstract

The paper considers a ballistic laser gravimeter (BLG) with a symmetrical way of the gravity acceleration (GA) measuring. Special treatment is given to the problem of eliminating the measurement error due to the vertical movement of a test body (TB). However, a short-term boost, the catapult produces, generates vi-brations of the basement and the mechanical elements of the gravimeter; these vi-brations result in the auto-seismic component of the measurement error. The effec-tiveness of employing in a BLG methods of vibrodamping to ensure the reduced auto-seismic component of the error (ACE) of the GA measuring is investigated. To decrease the ACE of the GA measuring it is proposed to launch the TB from a massive platform, installed on a light spring. It is shown that in the considered case, the BLG is capable of providing values of the ACE of measurement being less than 1 μGal.