Qingzhu LI, Zhining LI, Zhiyong SHI, Hongbo FAN. Single heading-line survey of MGTS for magnetic target pattern recognition[J]. Optics and Precision Engineering, 2023, 31(6): 872
- Optics and Precision Engineering
- Vol. 31, Issue 6, 872 (2023)
Fig. 1. Structure of planar-cross MGTS
Fig. 2. Variation curves of magnetization offset sensitivity of attributes
Fig. 3. MGTS heading-line surveys for pattern recognition training
Fig. 4. SLFNs model of the ELM
Fig. 5. Flow chart of MGTS heading-line surveys for pattern recognition based on SSA-KELM
Fig. 6. Posture characteristics attributes gxx ， gxy ， gxz ， gyy ， gyz ， Δ T ![]()
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λ 3， I 2， cos θ measurement signal
Fig. 7. Dimensionless waveform feature fractal dimension of the posture characteristics attributes signal
Fig. 8. Target posture characteristics recognition accuracy and feature visualization in PCA dimensionality reduction process
Fig. 9. Target magnetization direction and shape recognition results
Fig. 10. Dimensional waveform features fractal dimension of shape characteristic attributes signal
Fig. 11. Target geometric shape recognition accuracy and feature visualization in PCA dimensionality reduction process
Fig. 12. Target single heading-line surveys training experiment and the magnets to be measured
Fig. 13. Measurement results of the posture characteristic attributes of the magnets three poses on the first route
Fig. 14. Measurement results of the shape characteristic attributes of the magnets three shapes on the first route
Fig. 15. 3D feature distribution of posture and shape characteristic attributes （the original 54D dataset was reduced to 3D by PCA）
Fig. 16. Recognition results of three labels for the pose and shape of the magnets in the experiment
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Table 1. Statistical characteristic parameters of signal waveforms
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Table 2. Nine groups of magnetization directions of magnetic dipoles for recognition
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Table 3. The 15 groups of shapes of uniformly magnetized geometry for recognition
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Table 4. Size， magnetic moment， shape and posture category and posture diagram of magnets
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