Optomechanical Accelerometers for Geodesy
Optomechanical Accelerometers for Geodesy
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DOI：
10.3390/rs14174389
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发表时间：
2022-09-01
期刊：
影响因子：
5
通讯作者：
Guzman, Felipe
中科院分区：
文献类型：
--
作者：
Hines, Adam;Nelson, Andrea;Guzman, Felipe
我们提出了一种新的光机械惯性传感器的低频应用和相应的加速度测量。该传感器的谐振频率为4.715（1）Hz，机械品质因数为4.76（3）x 10（5），测试质量为2.6 g，1 Hz时的预计本底噪声约为5 x 10（-11）ms（-2）/root Hz。这种性能，加上其体积小，重量轻，功耗低，对磁场或阻力条件等环境变量的敏感性低，使其成为未来空间大地测量任务的有吸引力的技术。在本文中，我们提出了一个实验演示的低频地面地震噪声检测的直接比较与商业地震仪，和数据分析算法的识别，表征和校正的几个噪声源。
We present a novel optomechanical inertial sensor for low-frequency applications and corresponding acceleration measurements. This sensor has a resonant frequency of 4.715 (1) Hz, a mechanical quality factor of 4.76(3) x 10(5), a test mass of 2.6 g, and a projected noise floor of approximately 5 x 10(-11) ms(-2)/root Hz at 1 Hz. Such performance, together with its small size, low weight, reduced power consumption, and low susceptibility to environmental variables such as magnetic field or drag conditions makes it an attractive technology for future space geodesy missions. In this paper, we present an experimental demonstration of low-frequency ground seismic noise detection by direct comparison with a commercial seismometer, and data analysis algorithms for the identification, characterization, and correction of several noise sources.