CPT磁力仪拖曳式探测系统的深度残差网络磁补偿方法

    Deep residual network-based magnetic compensation for a towed, CPT-based magnetometer detection system

    • 摘要: 传统的TL线性模型在处理CPT原子磁力仪拖曳式探测系统中的复杂磁干扰数据时,补偿精度存在局限性。为此本文引入神经网络技术,以实现更精准的非线性补偿。然而,常规神经网络模型在参数更新过程中可能遭遇梯度消失或过拟合等问题。为应对这些挑战,本文提出了一种基于深度残差网络的磁补偿模型(MCRNet),以进一步提升吊舱内磁干扰的补偿效果。试验结果显示,与传统方法中补偿效果最优的残差反向传播网络(ResBP)相比,MCRNet模型的改善比(IR)从4.251提升至4.826,增幅达13.53%;而补偿剩磁均方根误差(RMSE)从0.2减少至0.171,降低了14.5%。该模型提升了拖曳式磁异常探测系统的磁测精度。

       

      Abstract: The traditional Tolles-Lawson (TL) linear model suffers limitations of compensation precision in processing complex magnetic disturbance data obtained using a towed coherent population trapping (CPT)-based atomic magnetometer detection system. This study introduced neural network technology to achieve more precise nonlinear compensation. Given that conventional neural network models encounter issues such as gradient vanishment or overfitting during parameter updates, this study proposed a deep residual network-based magnetic compensation model (MCRNet) to further enhance the compensation effects of magnetic interference within a towed pod. Experimental results demonstrate that compared to the best traditional method—The Residual Backpropagation Network (ResBP), the proposed MCRNet model increased the improvement ratio (IR) to 4.826 from 4.251, increasing by 13.53%, and reduced the root mean square error (RMSE) of compensated residual magnetism to 0.171 from 0.2, representing a reduction of 14.5%. The proposed model enhances the magnetic survey accuracy of towed magnetic anomaly detection systems.

       

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