A portable atom gravimeter operating in noisy urban environments

TL;DR

This paper demonstrates a portable atom gravimeter capable of operating accurately in noisy urban environments, achieving sensitivity comparable to laboratory standards, and enabling practical field applications like gravity surveys on moving platforms.

Contribution

The authors develop and experimentally validate a portable atom gravimeter that maintains high sensitivity in noisy urban settings, advancing field deployment potential.

Findings

Achieves 65 uGal/√Hz sensitivity in noisy environments

Attains 1.1 uGal resolution after 4000 s integration

Comparable performance to state-of-the-art atom gravimeters

Abstract

The gravimeter based on atom interferometry has potentially wide applications on building the gravity networks, geophysics as well as gravity assisted navigation. Here, we demonstrate experimentally a portable atom gravimeter operating in the noisy urban environment. Despite the influence of noisy external vibrations, our portable atom gravimeter reaches a sensitivity as good as 65 uGal/\sqrt{Hz} and a resolution of 1.1 uGal after 4000 s integration time, being comparable to state-of-the-art atom gravimeters. Our achievement paves the way for bring the portable atom gravimeter to field applications, such as gravity survey on a moving platform.