Title:
VERY SHORT DISTANCE TOSS-UP TYPE ABSOLUTE GRAVIMETER
Document Type and Number:
Japanese Patent JP3689737
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a small-sized and inexpensive very short distance toss-up type absolute gravimeter.
SOLUTION: This very sort distance toss-up type absolute gravimeter 100 has a vacuum container 110 laid on a ground face, a reference mirror 122 supported inside the vacuum container, a drop mirror 124 dropped inside the vacuum container, a toss-up device 180 for tossing up the drop mirror 124 by a fixed distance, an atomic clock 164 for specifying a time with high precision, an interferometer for measuring a position of the drop mirror 124 time-serially and capable of obtaining an interference waveform itself, and a computing part 166 for calculating a gravitational acceleration, based on the waveform provided by the interferometer and the time specified by the atomic clock 164.
Inventors:
Masato Shintani
Application Number:
JP2002011961A
Publication Date:
August 31, 2005
Filing Date:
January 21, 2002
Export Citation:
Assignee:
National University Corporation Tokyo University
International Classes:
G01P15/03; G01B11/00; G01P3/36; G01V7/14; G01S17/32; (IPC1-7): G01V7/14; G01B11/00; G01P15/03
Domestic Patent References:
| JP2126181A | ||||
| JP58191932A | ||||
| JP47018578A |
Attorney, Agent or Firm:
Takehiko Suzue
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto