High precision atom interferometer-based dynamic gravimeter measurement by eliminating the cross-coupling effect
Abstract
A dynamic gravimeter with an atomic interferometer (AI) can perform absolute gravity measurements with high precision. AI-based dynamic gravity measurement is a type of joint measurement that uses AI sensors and a classical accelerometer. The coupling of the two sensors may degrade the measurement precision. In this study, we analyzed the cross-coupling effect and introduced a recovery vector to suppress this effect. We improved the phase noise of the interference fringe by a factor of 1.9 by performing marine gravity measurements using an AI-based gravimeter and optimizing the recovery vector. Marine gravity measurements were performed, and high gravity measurement precision was achieved. The external and inner coincidence accuracies of the gravity measurement are 0.42 mGal and 0.46 mGal, which were improved by factors of 4.18 and 4.21 by optimizing the cross-coupling effect.
Keywords
Cite
@article{arxiv.2312.09260,
title = {High precision atom interferometer-based dynamic gravimeter measurement by eliminating the cross-coupling effect},
author = {Yang Zhou and Wenzhang Wang and Guiguo Ge and Jinting Li and Danfang Zhang and Meng He and Biao Tang and Jiaqi Zhong and Lin Zhou and Runbing Li and Lin Mao and Hao Che and Leiyuan Qian and Yang Li and Fangjun Qin and Jie Fang and Xi Chen and Jin Wang and Mingsheng Zhan},
journal= {arXiv preprint arXiv:2312.09260},
year = {2024}
}