Abstract
AbstractCold atom gravimeter’s measurement accuracy is strongly affected by position stability of Raman mirror. A Raman mirror position measurement method using Fabry-Pérot interferometer for cold atom gravimeter is proposed. The Fabry-Pérot interferometer is used to measure the position changes of the three points of the Raman reflector, and then the three-dimensional coordinates of the three points were calculated, and finally the influence of the position change and inclination angle change of the center of the Raman reflector on the cold atom gravimeter was compensated. Theoretical analysis shows that the proposed method can effectively reduce the gravity measurement error caused by the position instability of Raman mirror. The simulation results show that the gravity measurement error can be reduced by a maximum of 16.299 mGal. Compared with the traditional method that only considers the position of the Raman mirror, the proposed method innovatively takes vertical deflection into account, which can more effectively compensate the gravity measurement error caused by the instability of the Raman mirror. The proposed method can effectively reduce the measurement uncertainty of cold atom gravimeter, and improve the robustness and stability of the cold atom gravimeter.KeywordsCold atom gravimeterPosition monitoringGravity measurement
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.