Construction of a Test Field for Relative Gravimeters in a Cave With a Cold Atom Gravimeter

被引：2

作者：

Wu, Bin ^{[1
,2
]}

Li, Dianrong ^{[1
,2
]}

Zhou, Yin ^{[1
,2
]}

Zhu, Dong ^{[1
,2
]}

Zhao, Yingpeng ^{[1
,2
]}

Qiao, Zhongkun ^{[1
,2
]}

Cheng, Bing ^{[1
,2
]}

Niu, Jingyu ^{[1
,2
]}

Guo, Xiaochun ^{[1
,2
]}

Wang, Xiaolong ^{[1
,2
]}

Lin, Qiang ^{[1
,2
]}

机构：

[1] Zhejiang Univ Technol, Zhejiang Prov Key Lab Quantum Precis Measurement, Coll Sci, Lab Sci & Technol Marine Nav & Control,China State, Hangzhou 310023, Peoples R China

[2] Zhejiang Univ Technol, Inst Frontier & Cross Sci, Hangzhou 310023, Peoples R China

来源：

IEEE SENSORS JOURNAL | 2024年 / 24卷 / 07期

关键词：

Gravity; Gravity measurement; Sensors; Atomic measurements; Magnetic field measurement; Laser beams; Geophysical measurements; Cold atom gravimeters (CAGs-E); measurement accuracy; testing field for relative gravimeters; DESIGN; SYSTEM;

D O I：

10.1109/JSEN.2024.3362371

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The Earth's gravity field is complex and variable. Performance evaluation of gravimeters requires gravity fields with well-known absolute gravity values. The aim of this study is to utilize an in-house developed cold atom gravimeter (CAG-E) in conjunction with CG-5 to establish a comprehensive test field consisting of 13 gravity datums at different altitudes. This absolute gravity field can be used for testing multiple relative gravimeters at the same time. The additional theoretical model calculations of this test field can provide a reference for gravity values at different heights, and a 3-D test field can be constructed in the future. In addition, a detailed performance evaluation of CAG-E was performed where the accuracy of the instrument repeatability was found to be 4.8 mu Gal. Finally, a correction of the geological density of the mountain was carried out using the absolute gravity values, and a minimum gravity difference residual of 0.9 mu Gal was obtained. These results verify the reliability of this test field for relative gravimeters.

引用

页码：9536 / 9544

页数：9