Enabling a linear model for the IMGC-02 absolute gravimeter

Enabling a linear model for the IMGC-02 absolute gravimeter
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为 IMGC-02 绝对重力计启用线性模型

DOI:
10.1088/0026-1394/51/3/304
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发表时间:
2014
期刊:
影响因子:
2.4
通讯作者:
Svitlov S
Svitlov S
中科院分区:
工程技术3区
文献类型:
--
作者:
Nagornyi V D;Biolcati E;Svitlov S

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绝大多数升降式绝对重力仪的测量过程都要解决迈克尔逊干涉仪中离散条纹计数引起的轨迹顶点奇异性。传统上,奇异性是通过实现轨迹的非线性模型来解决的,但是它们引入了它们自己的问题,例如重力估计的偏差、非唯一性和不稳定性。以IMGC-02型重力仪为例,证明了升降式重力仪的测量过程可以基于线性模型,该模型成功地解决了奇异性,并提供了重力值的严格估计。线性模型还有助于仪器的进一步增强,例如考虑新类型的干扰和振动的主动补偿。
Measurement procedures of most rise-and-fall absolute gravimeters have to resolve singularity at the apex of the trajectory caused by the discrete fringe counting in the Michelson-type interferometers. Traditionally the singularity is addressed by implementing non-linear models of the trajectory, but they introduce problems of their own, such as bias, non-uniqueness, and instability of the gravity estimates. Using the IMGC-02 gravimeter as an example, we show that the measurement procedure of the rise-and-fall gravimeters can be based on linear models which successfully resolve the singularity and provide rigorous estimates of the gravity value. The linear models also facilitate further enhancements of the instrument, such as accounting for new types of disturbances and active compensation for vibrations.
DOI: --
发表时间: 1984
期刊:
影响因子: --
作者:
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DOI: --
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DOI: 10.1088/0026-1394/45/3/007
发表时间: 2008
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影响因子: 2.4
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回复“自由落体绝对重力计二阶多普勒频移修正评论”
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发表时间: 2011
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影响因子: 2.4
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