【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±6×10~5 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;-3dB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。更多还原

【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 ± 6×10~5 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.更多还原