Reference : Comparison of three digital fringe signal processing methods in a ballistic free-fall...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/10993/2119
Comparison of three digital fringe signal processing methods in a ballistic free-fall absolute gravimeter
English
Svitlov, S. mailto [Max Planck Research Group, Institute of Optics, Information and Photonics, University of Erlangen-Nuremberg]
Masłyk, P. [Max Planck Research Group, Institute of Optics, Information and Photonics, University of Erlangen-Nuremberg]
Rothleitner, Christian mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Hu, H. [Max Planck Research Group, Institute of Optics, Information and Photonics, University of Erlangen-Nuremberg]
Wang, LJ [Max Planck Research Group, Institute of Optics, Information and Photonics, University of Erlangen-Nuremberg]
2010
Metrologia
Institute of Physics
47
6
677
Yes (verified by ORBilu)
International
0026-1394
1681-7575
Bristol
United Kingdom
[en] gravimetry ; Zero-crossing ; signal processing ; absolute gravimeter
[en] This paper reports results of comparison of three digital fringe signal processing methods implemented in the same free-fall absolute gravimeter. A two-sample zero-crossing method, a windowed second-difference method and a method of non-linear least-squares adjustment on the undersampled fringe signal are compared in numerical simulations, hardware tests and actual measurements with the MPG-2 absolute gravimeter, developed at the Max Planck Institute for the Science of Light, Germany. The two-sample zero-crossing method realizes data location schemes that are both equally spaced in distance and equally spaced in time (EST) along the free-fall trajectory. The windowed second-difference method and the method of non-linear least-squares adjustment with complex heterodyne demodulation operate with the EST data. Results of the comparison verify an agreement of the three methods within one part in 10 9 of the measured gravity value, provided a common data location scheme is considered.
Researchers ; Professionals ; Students
http://hdl.handle.net/10993/2119
10.1088/0026-1394/47/6/007
http://stacks.iop.org/0026-1394/47/i=6/a=007

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