Prediction of Tidal Flat Sediment Moisture Content Based on Wavelet Transform

Xue-ying LI; Zong-min LI; Guang-yuan CHEN; Hui-min QIU; Guang-li HOU; Ping-ping FAN

doi:10.3964/j.issn.1000-0593(2022)04-1156-06

Journals >Spectroscopy and Spectral Analysis >Volume 42 >Issue 4 >Page 1156 > Article

Spectroscopy and Spectral Analysis
Vol. 42, Issue 4, 1156 (2022)

Prediction of Tidal Flat Sediment Moisture Content Based on Wavelet Transform

Xue-ying LI^1、*, Zong-min LI^{3、3; *;}, Guang-yuan CHEN^4、4;, Hui-min QIU^2、2;, Guang-li HOU^2、2;, and Ping-ping FAN^{2、2; *;}

Author Affiliations

¹1. School of Geosciences, China University of Petroleum (Huadong), Qingdao 266580, China

²2. Institute of Oceanographic Instrumentation, Qilu University of Technology (Shandong Academy of Sciences), Qingdao 266061, China

³3. College of Computer Science and Technology, China University of Petroleum (Huadong), Qingdao 266580, China

⁴4. College of Ocean Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China

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DOI: 10.3964/j.issn.1000-0593(2022)04-1156-06 Cite this Article

Xue-ying LI, Zong-min LI, Guang-yuan CHEN, Hui-min QIU, Guang-li HOU, Ping-ping FAN. Prediction of Tidal Flat Sediment Moisture Content Based on Wavelet Transform[J]. Spectroscopy and Spectral Analysis, 2022, 42(4): 1156 Copy Citation Text

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Scatter plot of the measured against predicted moisture content using original spectra of tidal flat sediments(a): Modeling set; (b): Prediction set

Fig. 1. Scatter plot of the measured against predicted moisture content using original spectra of tidal flat sediments
(a): Modeling set; (b): Prediction set

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Fig. 2. Low and high frequency information spectrograms of tidal flat sediment based on discrete wavelet transform (db10 wavelet basis)

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Fig. 3. Modeling results of low and high frequency informations of sediment based on sym6 wavelet

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样品种类	样品个数	最大值	最小值	平均值	标准差
新鲜样品	155	63.57	43.42	54.77	2.87
风干4周	155	55.41	31.76	47.82	3.61
风干8周	155	47.32	18.81	38.23	5.09
所有样品	465	63.57	18.81	46.94	7.86

Table 1. The statistical results of moisture content (%) of tidal flat sediments

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n	A_n			D_n
n	$R_{p}^{2}$	RMSEP	RPD	$R_{p}^{2}$	RMSEP	RPD
1	0.830	2.882	2.388	0.629	4.540	1.532
2	0.818	2.960	2.321	0.572	4.917	1.408
3	0.820	2.952	2.335	0.572	4.949	1.405
4	0.837	2.836	2.454	0.294	6.155	1.132
5	0.827	2.939	2.376	0.467	5.421	1.313
6	0.817	3.039	2.298	0.572	4.645	1.495
7	0.779	3.340	2.083	0.702	3.986	1.792
8	0.783	3.291	2.098	0.728	3.715	1.908
9	0.749	3.563	1.949	0.728	3.731	1.889
10	0.809	3.118	2.267	0.623	4.181	1.616

Table 2. Modeling results of low and high frequency informations of sediment based on db10 wavelet

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尺度参数	建模集		预测集
尺度参数	$R_{c}^{2}$	RMSEC	$R_{p}^{2}$	RMSEP	RPD
S-D₁	0.871	3.127	0.829	2.882	2.388
S-D₂	0.918	2.489	0.853	2.658	2.586
S-D₃	0.928	2.348	0.870	2.500	2.742
S-D₄	0.927	2.365	0.873	2.495	2.748
S-D₅	0.887	2.927	0.850	2.699	2.541
S-D₆	0.879	3.035	0.845	2.720	2.521
S-D₇	0.881	3.005	0.838	2.799	2.456
S-D₈	0.846	3.392	0.834	2.896	2.405
S-D₉	0.924	2.408	0.841	2.774	2.466
S-D₁₀	0.866	3.192	0.835	2.804	2.459
S-D₃-D₄	0.924	2.397	0.878	2.501	2.749

Table 3. Modeling results of S-D_n spectral information of tidal flat sediment based on db10 wavelet

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尺度参数	建模集		预测集
尺度参数	$R_{c}^{2}$	RMSEC	$R_{p}^{2}$	RMSEP	RPD
S-D₁	0.900	2.758	0.832	2.913	2.356
S-D₂	0.783	4.061	0.846	2.907	2.365
S-D₃	0.874	3.089	0.840	2.764	2.489
S-D₄	0.884	2.973	0.848	2.714	2.531
S-D₅	0.928	2.332	0.867	2.542	2.702
S-D₆	0.880	3.018	0.848	2.708	2.540
S-D₇	0.858	3.271	0.840	2.778	2.484
S-D₈	0.924	2.398	0.864	2.562	2.686
S-D₉	0.921	2.456	0.869	2.497	2.755
S-D₁₀	0.907	2.633	0.845	2.728	2.546
S-D₅-D₉	0.920	2.473	0.870	2.475	2.768

Table 4. Modeling results of S-D_n spectral information of tidal flat sediment based on sym6 wavelet

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