Acoustic and vibration isolation for a gravity gradiometer
Vibration in the audio frequency band affects the performance of rotating gravity gradiometers used for airborne mineral exploration. This is probably due to translation to rotation coupling inside the gradiometer platform. It was found that the DC gravity gradient signal was proportional to the squ...
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| Veröffentlicht in: | Review of scientific instruments 2022-06, Vol.93 (6), p.064502-064502 |
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| container_title | Review of scientific instruments |
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| creator | Sunderland, A. Naveh, Y. Ju, L. Blair, D. G. Lockwood, R. Anderson, B. Dransfield, M. |
| description | Vibration in the audio frequency band affects the performance of rotating gravity gradiometers used for airborne mineral exploration. This is probably due to translation to rotation coupling inside the gradiometer platform. It was found that the DC gravity gradient signal was proportional to the square of the third time derivative of position, or jerk squared. The demanding airborne environment for such instrumentation demands a light weight broadband acoustic shield and vibration isolator. This paper presents the design principles for such an isolator, based on vibration isolated spherical shell structures. Performance data are presented as well as flight test data that demonstrated a 14% gravity gradient noise reduction compared with an unshielded instrument. |
| doi_str_mv | 10.1063/5.0091900 |
| format | Article |
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| identifier | ISSN: 0034-6748 |
| ispartof | Review of scientific instruments, 2022-06, Vol.93 (6), p.064502-064502 |
| issn | 0034-6748 1089-7623 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_2684104636 |
| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Audio frequencies Broadband Gradiometers Gravity gradiometers Magnetic measurement Mineral exploration Noise reduction Scientific apparatus & instruments Spherical shells Vibration isolators Weight reduction |
| title | Acoustic and vibration isolation for a gravity gradiometer |
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