A Large Range and Low Noise Vector Magnetometer for Magnetic Target Recognition

doi:10.13209/j.0479-8023.2025.039

Acta Scientiarum Naturalium Universitatis Pekinensis ›› 2025, Vol. 61 ›› Issue (3): 451-455.DOI: 10.13209/j.0479-8023.2025.039

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A Large Range and Low Noise Vector Magnetometer for Magnetic Target Recognition

YU Xiangqian¹, HE Donghua¹, SHI Weihong^1,†, XIAO Chijie², LIU Si³, ZONG Qiugang¹, CHEN Hongfei¹, WANG Linghua¹, ZOU Hong¹, WANG Yongfu¹

1. School of Earth and Space Sciences, Peking University, Beijing 100871 2. School of Physics, Peking University, Beijing 100871 3. School of Physics and Electronic Science, Changsha University of Science & Technology, Changsha 410114

Received:2024-03-30 Revised:2024-07-13 Online:2025-05-20 Published:2025-05-20
Contact: SHI Weihong, E-mail: whshi(at)pku.edu.cn

一种应用于磁源目标识别的大量程低噪声矢量磁强计

于向前¹, 和冬华¹, 施伟红^1,†, 肖池阶², 刘斯³, 宗秋刚¹, 陈鸿飞¹, 王玲华¹, 邹鸿¹, 王永福¹

1. 北京大学地球与空间科学学院, 北京 100871 2. 北京大学物理学院, 北京 100871 3. 长沙理工大学物理与电子科学学院, 长沙 410114

通讯作者: 施伟红, E-mail: whshi(at)pku.edu.cn
基金资助:
中国子午工程二期项目(8201701679)和国家重大科研仪器研制项目(42127803)资助

Abstract

Abstract:

According to the need for large range, low noise vector magnetic field detection systems in magnetic source target recognition, a vector magnetometer based on magnetoresistive sensor HMC1021Z is proposed. Through experimental testing, the magnetic field detection range of the vector magnetometer can be as high as ± 6×10⁵ nT. At the same time, it has a high linearity, and the nonlinear error is ≤5.6‱. Root mean square (RMS) noise is 1.2611 nT and power spectral density (PSD) noise is 0.8 nT/√Hz@1 Hz. −3 dB bandwidth is DC to 8 Hz. All these characteristics make the proposed vector magnetometer meet the requirements of magnetic field detection with large range and low noise in magnetic target recognition applications.

Key words: magnetoresistive sensor, vector magnetometer, large range, low noise, magnetic target recognition

摘要：

针对磁源目标识别任务中对大量程、低噪声矢量磁场探测系统的需求, 提出一种基于磁阻传感器HMC1021Z的矢量磁强计。经过实验测试, 该矢量磁强计的磁场探测量程可以高达±6×10⁵ nT, 同时具有较高的线性度, 非线性误差≤5.6‱; 方均根(RMS)噪声为1.2611 nT; 功率谱密度(PSD)噪声为0.8 nT/√Hz@1 Hz; −3 dB带宽为DC~8 Hz。因此, 所提出的矢量磁强计能够满足磁源目标识别任务中大量程、低噪声的磁场探测需求。

关键词: 磁阻传感器, 矢量磁强计, 大量程, 低噪声, 磁源目标识别

YU Xiangqian, HE Donghua, SHI Weihong, XIAO Chijie, LIU Si, ZONG Qiugang, CHEN Hongfei, WANG Linghua, ZOU Hong, WANG Yongfu. A Large Range and Low Noise Vector Magnetometer for Magnetic Target Recognition[J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2025, 61(3): 451-455.

于向前, 和冬华, 施伟红, 肖池阶, 刘斯, 宗秋刚, 陈鸿飞, 王玲华, 邹鸿, 王永福. 一种应用于磁源目标识别的大量程低噪声矢量磁强计[J]. 北京大学学报自然科学版, 2025, 61(3): 451-455.

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URL: https://xbna.pku.edu.cn/EN/10.13209/j.0479-8023.2025.039

https://xbna.pku.edu.cn/EN/Y2025/V61/I3/451

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A Large Range and Low Noise Vector Magnetometer for Magnetic Target Recognition

一种应用于磁源目标识别的大量程低噪声矢量磁强计

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