原子干涉重力梯度仪研究进展综述

Summarize of Gravity Gradient Research Progress with Atom Interferometer

原子干涉重力梯度仪利用原子来感应重力的作用,不同于角加速度、静电悬浮和超导等重力梯度仪,是一种绝对重力梯度仪,无机械磨损,测量频率高,且采用激光操控原子,时序、定位精度高,使用寿命长,具有固有的抑制振动特性以及极佳的长期稳定性,在惯性导航及重力匹配辅助导航方面极具应用潜力。简要介绍了基于原子干涉的重力梯度仪测量原理,并在相关资料的基础上总结了原子干涉重力梯度仪在国内外的发展现状,指出了国内目前在技术体制、小型化以及测量精度上的主要差距。

Gravity gradient with atom interferometer uses ter with angular acceleration, electrostatic suspension or atom to feel the impact of gravity. Unlike other gravity gradiome- superconductor, it＇s a kind of absolute gravity gradiometer with many advantages such as non-contact and non-mechanical wear, high measuring frequency, high timing sequence and locating accuracy and long serving life. Moreover, it has the inherent property of restraining vibration and long stability which shows great potential for application in inertial navigation and gravity matching and aided navigation. The measuring principle of gravity gradient with atom interferometer is briefly introduced in this paper. And its research progress based on some related information during recent years is summarized. The main gap in technical system, miniaturization and measurement accuracy between domestic and overseas are proposed as well.