Experimental Study on Void Detection Behind Subway Tunnel Lining and Signal Denoising Method: Using a Combined Denoising Method Based on Butterworth Bandpass Filter and Daubechies8 Wavelet Transform
1.The Key Laboratory of Urban Security and Disaster Engineering of China Ministry of Education, Beijing University of Technology, Beijing 100124
2.China University of Geosciences, Beijing, Beijing 100083
3.Beijing Urban Construction Exploration & Surveying Design Research Institute Co., Ltd., Beijing 100101
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