Article (Scientific journals)
Second-order Doppler-shift corrections in free-fall absolute gravimeters
ROTHLEITNER, Christian; FRANCIS, Olivier
2011In Metrologia, 48 (3), p. 187-195
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Abstract :
[en] In a free-fall absolute gravimeter usually a Michelson type interferometer is employed to track the trajectory of a freely falling retroreflector. The accelerated motion of the retroreflector produces a Doppler-shift in the laser wavelength. From the interference signal (beat signal) of the Doppler-shifted and the reference electromagnetic waves the relative motion of the freely falling retroreflector with respect to an inertial reference retroreflector is reconstructed. Considerations of second-order Doppler-shift terms lead to a correction in the acceleration due to gravity of several microgals (1 µGal = 10 nm s −2 ). This correction is commonly called speed of light correction . To date different correction formulae have been proposed, which differ by several microgals. In this paper we review several previous publications and show the reasons for the different results.
Disciplines :
Earth sciences & physical geography
Physics
Identifiers :
UNILU:UL-ARTICLE-2011-336
Author, co-author :
ROTHLEITNER, Christian ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
FRANCIS, Olivier  ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Language :
English
Title :
Second-order Doppler-shift corrections in free-fall absolute gravimeters
Publication date :
2011
Journal title :
Metrologia
ISSN :
1681-7575
Publisher :
Institute of Physics, Bristol, United Kingdom
Volume :
48
Issue :
3
Pages :
187-195
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBilu :
since 03 May 2013

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