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A Machine Learning-Based Algorithm for Through-Wall Target Tracking by Doppler TWR
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DOI：10.1109/TIM.2024.3369133.png)
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摘要
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Doppler through-wall radar (TWR) enables noncontact behind-the-wall target trajectory tracking, which has a wide range of application scenarios in the field of detection. However, when facing unknown wall parameters, the detection accuracy of Doppler TWR becomes severely limited. Hence, in this work, we propose a machine learning-based target tracking algorithm for through-wall sensing applications. First, using the peak search method based on the short-time Fourier transform (STFT) to obtain a roughly predicted trajectory under the free-space assumption. Then, a classifier based on support vector machine (SVM) is used to estimate the wall thickness from the predicted target trajectory. Finally, a backpropagation neural network (BPNN) is constructed to obtain the corrected target trajectory, whose inputs are the estimated wall thickness and the predicted target trajectory. Experimental results demonstrate that the proposed algorithm significantly improves target tracking accuracy in through-wall detection applications, achieving up to an 80% improvement compared to traditional methods.
Keyword:
Target tracking
Doppler radar
Receivers
Radar tracking
Electromagnetic scattering
Doppler effect
Trajectory
Backpropagation neural network (BPNN)
Doppler through-wall radar (TWR)
support vector machine (SVM)
trajectory correction
wall thickness
期刊
IF:
5.9
论文数:
2.0W
被引数:
5.8W
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