Abstract
Superconductive gravity gradiometers for space have been expected in vain for more than fifteen years, since the niobium superconductor technology has maturated and became commonly regarded as adequate to the purpose. Therefore an old design idea may be suspected of inefficiency, and new concepts should be considered. We propose one that abandons an attractive yet restrictive method of spatial differentiation by the principle of the magnetic flux conservation. Instead, it uses the SQUID just as a low noise sensor in the test mass displacement transducers, and differentiates by means of a negative feedback. We argue that the feedback can case the known obstacles. Especially, it provides convenient practical means for neutralization of the low frequency SQUID noise, and for correction of dimensional inaccuracies of the sensor mechanics. Moreover, the feedback can organize a cluster of twelve elementary accelerometers into a precise tensor gradiometer that can self-correct its inaccuracies by tuning the cross-coupling between its clenients.
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© 2003 Springer Science+Business Media Dordrecht
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Zarembiński, S. (2003). On Superconductive Gravity Gradiometry in Space. In: Beutler, G., Drinkwater, M.R., Rummel, R., Von Steiger, R. (eds) Earth Gravity Field from Space — From Sensors to Earth Sciences. Space Sciences Series of ISSI, vol 17. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-1333-7_31
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DOI: https://doi.org/10.1007/978-94-017-1333-7_31
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-6334-2
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