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On Superconductive Gravity Gradiometry in Space

  • Stefan Zarembiński
Part of the Space Sciences Series of ISSI book series (SSSI, volume 17)

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.

Keywords

Gravity Gradient Test Mass Torsion Balance Gravity Gradiometer Gravity Gradient Tensor 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 2003

Authors and Affiliations

  • Stefan Zarembiński
    • 1
  1. 1.Department of PhysicsChalmers University of TechnologyGothenburgSweden

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