飞控与探测2025，Vol.8Issue(2)：72-81,10.DOI:10.20249/j.cnki.2096-5974.2025.02.009
原子重力仪动态测量系统中加速度计的现场标定
Field Calibration of Accelerometer in the Dynamic Measurement System of Atomic Gravimeter
摘要
Abstract
The accelerometer can be used for vibration correction of atomic gravimeters,mitigating vibration noise interference,and enhancing the dynamic measurement accuracy of atomic gravime-ters.It constitutes an essential component of the measurement system.To achieve higher device accuracy,it is necessary to calibrate the accelerometer error prior to utilization.In this paper,combined with the dynamic measurement system of the atomic gravimeter,based on the principle of the modulus invariance of the accelerometer gravity vector,the accelerometer is placed on a sta-ble platform for measurement in various orientations,and a cost function is established by compa-ring the high-precision gravity output of the atomic gravimeter.To address issues related to time-consuming iterative methods and significant reliance on initial values,the cost function is simpli-fied,a linear model is deduced,and the least squares method is employed to compute calibration parameters such as zero bias,scale factor,and non-orthogonal coefficient.Simulation experiments are conducted to investigate the impact of accelerometer noise level,the number of accelerometer orientations,and the initial parameter values on each calibration method.The proposed method's effec-tiveness and accuracy advantages are preliminarily demonstrated.Subsequent practical assessments are conducted under dock mooring conditions.The results showed that after calibration,the average value of the accelerometer output vector modulus decreased from 1.003 5 g to 1.000 1 g,which is closer to the gravity acceleration reference value,and the standard deviation decreased by 70.5％.关键词
加速度计/现场标定/原子重力仪/最小二乘法Key words
accelerometer/field calibration/atomic gravimeter/least squares分类
交通工程引用本文复制引用
黄春福,闫久江,李安,覃方君,车浩,龚文斌..原子重力仪动态测量系统中加速度计的现场标定[J].飞控与探测,2025,8(2):72-81,10.基金项目
国家自然科学基金(42274013) （42274013）
