A new method for absolute calibration of high-sensitivity accelerometers and other graviinertial devices

Tarbeyev, Yu.V.; Krivtsov, Ye. P.; Sinelnikov, A. Ye.; Yankovsky, A. A.

doi:10.1785/bssa0840020438

Cited by 5 publications

(1 citation statement)

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“…Target accuracy of 10 −5 G expected with the use of tungsten or uranium perturbing masses a An apparatus similar to this has been built by Tarbeyev et al (1994) and used for the calibration of accelerometers. Also, Klimchitskaya et al (1996) have proposed that it be used in experimental searches for composition-dependent gravity.…”

Section: Reference/datementioning

confidence: 99%

The Newtonian gravitational constant: recent measurements and related studies

1997

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Improvements in our knowledge of the absolute value of the Newtonian gravitational constant, G, have come very slowly over the years. Most other constants of nature are known (and some even predictable) to parts per billion, or parts per million at worst. However, G stands mysteriously alone, its history being that of a quantity which is extremely difficult to measure and which remains virtually isolated from the theoretical structure of the rest of physics. Several attempts aimed at changing this situation are now underway, but the most recent experimental results have once again produced conflicting values of G and, in spite of some progress and much interest, there remains to date no universally accepted way of predicting its absolute value. The review will assess the role of G in physics, examine the status of attempts to derive its value and provide an overview of the experimental efforts that are directed at increasing the accuracy of its determination. Regarding the latter, emphasis will be placed on describing the instrumentational aspects of the experimental work. Related topics that are also discussed include the search for temporal variation of G and recent investigations of possible anomalous gravitational effects that lie outside of presently accepted theories.

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Section: Reference/datementioning

confidence: 99%

The Newtonian gravitational constant: recent measurements and related studies

1997

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A 50 pico-g resolution integrated test facility for high-precision inertial sensors

Mei,

Ma,

Bai

et al. 2023

Meas. Sci. Technol.

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High-precision inertial sensors are the key instruments for many applications. However, their performance is difficult to test on the ground due to the effect of seismic noise. To evaluate the complete performance of inertial sensors, the main test items include noise floor test, scale factor calibration, resolution test and so on. The accelerometers used in inertial navigation and precision measurement fields usually require direct resolution test. Depending on the application, the resolution of high-precision accelerometers can reach up to the pico-g (pg) level or even higher. However, the resolution test ability of conventional test systems is limited by the seismic noise and the precision of the input signal, which becomes the main obstacle for the development of sub-nano-g to pg level accelerometers. In this paper, a simultaneous two-dimensional integrated performance test facility is developed using an active vibration isolation bench and precision gravitational input, allowing the performance test of high-precision inertial sensors and direct evaluation of resolution at the 50 pg level.

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