000196317 001__ 196317
000196317 003__ CZ-ZdVUG
000196317 005__ 20210823112002.0
000196317 041__ $$aeng
000196317 040__ $$aABC039$$bcze
000196317 1001_ $$aPálinkáš, Vojtech
000196317 24510 $$aImproved measurement model for FG5/X gravimeters
000196317 300__ $$a9 stran
000196317 5203_ $$aAbsolute gravimeters are instruments that realize reference measurements of the free-fall acceleration, at present by tracking the freely falling objects using interferometry. The functional model of measurements of absolute gravimeters contains parameters related to the model of the local gravity field as well as to the model of particular instrumental effects. In this paper, we show an improvement of the measurement model of absolute gravimeters based on laser interferometry, by an enhanced description of instrumental effects. Namely, a more precise description of the demodulation of the interferometric signal is presented as well as a newly discovered and explained parasitic signal due to the dropping mechanism of FG5 and FG5X (FG5/X) gravimeters. These improvements can be easily incorporated into the measurement model allowing to obtain more accurate and more stable results for g-values needed for various geophysical and metrological applications requiring the highest level of accuracy.
000196317 655_4 $$ačlánek v časopise
000196317 7001_ $$aMiloš Vaľko
000196317 7730_ $$92020$$dNizozemsko,2021.$$g171. (únor2021), 9s.$$tMeasurement$$x0263-2241
000196317 8564_ $$uhttps://www.sciencedirect.com/science/article/abs/pii/S0263224120312422?via%3Dihub
000196317 85642 $$ahttps://www.isvavai.cz/riv?s=rozsirene-vyhledavani&ss=detail&n=0&h=RIV%2F00025615%3A_____%2F20%3AN0000059%21RIV21-MSM-00025615
000196317 910__ $$aABC039
000196317 980__ $$aclanky_vugtk
000196317 985__ $$avalko
000196317 985__ $$ariv
000196317 985__ $$autvar24
000196317 985__ $$apalinkas