北京大学学报自然科学版 ›› 2025, Vol. 61 ›› Issue (3): 451-455.DOI: 10.13209/j.0479-8023.2025.039

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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. 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
  • 收稿日期:2024-03-30 修回日期:2024-07-13 出版日期:2025-05-20 发布日期:2025-05-20
  • 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

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

YU Xiangqian1, HE Donghua1, SHI Weihong1,†, XIAO Chijie2, LIU Si3, ZONG Qiugang1, CHEN Hongfei1, WANG Linghua1, ZOU Hong1, WANG Yongfu1
  

  1. 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

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

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