Simulation of 1 bit Sigma-Delta Digital Fluxgate Magnetometer

设计了一种基于1 bit Sigma-Delta调制技术的数字磁通门磁强计, 并利用Matlab Simulink工具对其进行仿真建模与分析, 获得了系统在噪声、线性度、动态响应速度以及频率响应等方面的性能参数. 在±1000 nT量程范围内, 该磁强计系统在1 Hz处的噪声为0.17 pT·Hz<sup>–1/2</sup>, 最大线性误差为1.04 pT, 动态响应速度为1.07×10<sup>3</sup> nT·s<sup>–1</sup>, 频率响应带宽超过30 Hz. 仿真结果证实, 采用1 bit Sigma-Delta调制技术显著提高了数模转换器(Digital-to-Analog Converter, DAC)的转换精度, 有效降低了数字磁强计系统的本底噪声和非线性误差, 显著提升了数字磁强计的性能. 基于1 bit Sigma-Delta调制技术的数字磁通门磁强计性能指标能够满足高精度磁场探测任务的要求, 为空间磁场探测领域提供了一种高精度、高可靠性的探测手段, 在深空探测及空间科学领域具有广泛的应用前景.

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Publication Details

Journal
Chinese Journal of Space Science
Published
2025-01-01
DOI
https://doi.org/10.11728/cjss2025.03.2024-0061
Primary Topic
Ionosphere and magnetosphere dynamics
Type
article
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article

Simulation of 1 bit Sigma-Delta Digital Fluxgate Magnetometer

Jindong WANG, Yiteng Zhang, Shang Kui Lv
Chinese Journal of Space Science
Ionosphere and magnetosphere dynamics
article

Simulation of 1 bit Sigma-Delta Digital Fluxgate Magnetometer

Jindong WANG, Yiteng Zhang, Shang Kui Lv
article en

Abstract

设计了一种基于1 bit Sigma-Delta调制技术的数字磁通门磁强计, 并利用Matlab Simulink工具对其进行仿真建模与分析, 获得了系统在噪声、线性度、动态响应速度以及频率响应等方面的性能参数. 在±1000 nT量程范围内, 该磁强计系统在1 Hz处的噪声为0.17 pT·Hz<sup>–1/2</sup>, 最大线性误差为1.04 pT, 动态响应速度为1.07×10<sup>3</sup> nT·s<sup>–1</sup>, 频率响应带宽超过30 Hz. 仿真结果证实, 采用1 bit Sigma-Delta调制技术显著提高了数模转换器(Digital-to-Analog Converter, DAC)的转换精度, 有效降低了数字磁强计系统的本底噪声和非线性误差, 显著提升了数字磁强计的性能. 基于1 bit Sigma-Delta调制技术的数字磁通门磁强计性能指标能够满足高精度磁场探测任务的要求, 为空间磁场探测领域提供了一种高精度、高可靠性的探测手段, 在深空探测及空间科学领域具有广泛的应用前景.

Chinese Journal of Space ScienceVol. 45(3)
Affordable and clean energy
Openalex Percentile: Top 91%
Ionosphere and magnetosphere dynamics
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Simulation of 1 bit Sigma-Delta Digital Fluxgate Magnetometer — Jindong WANG, Yiteng Zhang, et al. · Chinese Journal of Space Science (2025) | TGRS Research Map | TGRS