On-site Frequency Measurements of a Rubidium Oscillator for Gravimeters

• Mochizuki Kazuma

  Geological Survey of Japan, AIST Department of Geosciences, Sizuoka University

• Nawa Kazunari

  Geological Survey of Japan, AIST

• Suzuyama Tomonari

  National Metrological Institute of Japan, AIST

Bibliographic Information

Other Title

• 重力観測点におけるルビジウム発振器の周波数測定
• ジュウリョク カンソクテン ニ オケル ルビジウム ハッシンキ ノ シュウハスウ ソクテイ

Abstract

It is important for precise gravity measurement to calibrate the frequency of a rubidium oscillator as a time frequency standard. We demonstrate simple on-site frequency measurement by using a time frequency calibration tool (FT-001A) with a GPS common view method. We equipped one at the Full Range Seismograph Network of Japan (F-net) Ishigaki (IGK) station, Okinawa, Japan, and measured frequency variation of the internal rubidium oscillator of gPhone gravimeter (#133). As a result, we could measure its frequency with uncertainty of approximately 10^-12 (0.01 mHz) on the gravity station 2,000 km apart from AIST Tsukuba where UTC(NMIJ) is maintained.

Journal

• Journal of the Geodetic Society of Japan

  Journal of the Geodetic Society of Japan 63 (3), 187-191, 2018

  The Geodetic Society of Japan

Details

• CRID: 1390001204067740544
• NII Article ID: 130006728305
• NII Book ID: AN00134900
• DOI: 10.11366/sokuchi.63.187
• ISSN: 2185517X
• ISSN: 00380830
• NDL BIB ID: 029026518
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I029026518
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed