Measurement method and noise analysis of spaceborne atom-interferometry-based gravity gradiometer

被引：0
|
作者：
Zhu Z. [1 ]
Zhang G.-W. [2 ,3 ]
Zhao Y.-B. [1 ]
Liao H. [1 ]
Wei X.-G. [2 ,3 ]
机构：
[1] Shanghai Institute of Satellite Engineering, Shanghai
[2] Beijing Institute of Aerospace Control Devices, Beijing
[3] Quantum Engineering Research Center, China Aerospace Science and Technology Corporation, Beijing
来源：
Zhongguo Guanxing Jishu Xuebao/Journal of Chinese Inertial Technology | 2017年 / 25卷 / 04期
关键词：
Atom interferometry; Gravity gradiometer; Noise; Space-borne;
D O I：
10.13695/j.cnki.12-1222/o3.2017.04.005
中图分类号：
学科分类号：
摘要：
The atom interferometry gradiometer can obtain greatly improved sensitivity and miniaturization in spaceborne environment where the atomic weightlessness effectively reduce the risk of running up against the instrument wall and significantly increase the interference time. At present, although the development of the on-ground experiment of the atom interferometry gradiometer has been matured, its space application has not been realized yet. In this paper, a measurement method suitable for space micro-gravity environment is proposed and discussed for the atom interferometry gravity gradiometer. The analysis results show that the precision of space-borne atom interferometry gravity gradiometer can achieve 1 mE/Hz1/2 in the <0.1 Hz bandwidth which is concerned by satellite gravity gradiometry. The proposed measurement method can provide technical basis for the space application of the atom interferometry gravity gradiometer in the future. © 2017, Editorial Department of Journal of Chinese Inertial Technology. All right reserved.
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页码：449 / 454
页数：5
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