レーザー干渉計型重力鉛直勾配計の開発

書誌事項

タイトル別名
  • Development of a Laser-interferometric Gravity-gradiometer
  • レーザー カンショウケイガタ ジュウリョク エンチョク コウバイケイ ノ カイハツ
公開日
2012
DOI
  • 10.11366/sokuchi.58.131
公開者
日本測地学会

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説明

We have been developing a new type of gravity gradiometer that employs technologies of laser interferometer. In the gravity gradiometer, differential accelerations between two test bodies, freely falling at different heights in the local gravitational fields, are measured by a Michelson interferometer. Our preliminary laboratory experiment shows that the gravity gradiometer has a resolution of a few μGal/m. By incorporating some improvements for practical use, the gravity gradiometer could be used for various researches in the fields of geodesy and geophysics. We report its working principle and the current status of the development of the gravity gradiometer.

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