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| 基于近红外傅里叶特征提取方法的土壤含水率检测 | |
| 引用本文： | 李小昱,肖武,李培武,雷廷武,王为,冯耀泽.基于近红外傅里叶特征提取方法的土壤含水率检测[J].农业机械学报,2009,40(5):64-67. |
| 作者姓名： | 李小昱 肖武 李培武 雷廷武 王为 冯耀泽 |
| 作者单位： | 1. 华中农业大学工程技术学院,武汉,430070 2. 中国农业科学院油料作物研究所,武汉,430062 3. 中国科学院水利部水土保持研究所,陕西杨凌,712100 |
| 基金项目： | 中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室基金 |
| 摘 要： | 以湖北地区的3种土壤为研究对象,利用偏最小二乘法建立了处理后样品的土壤含水率分析模型,模型预测值与标准值的决定系数为0.995,交叉验证预测均方差为0.801%,模型预测决定系数为0.992,预测均方差为0.912%,利用该模型预测黄土高原地区黄绵土含水率误差均大于4%.利用近红外光谱傅里叶变换特征提取方法对湖北地区黄棕壤、稻田土和潮土建立土壤含水率PLS预测模型,模型决定系数为0.988,交叉验证预测均方差为1.106%,且该模型预测黄绵土的误差均在2%左右,精度较传统模型有较大提高. |
| 关 键 词： | 土壤 含水率 近红外光谱 傅里叶变换 特征提取 |
-infrared Spectral Detection of Soil Moisture Based on Feature Extraction of FFT |
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| Li Xiaoyu,Xiao Wu,Li Peiwu,Lei Tingwu,Wang Wei,Feng Yaoze.-infrared Spectral Detection of Soil Moisture Based on Feature Extraction of FFT[J].Transactions of the Chinese Society of Agricultural Machinery,2009,40(5):64-67. | |
| Authors: | Li Xiaoyu Xiao Wu Li Peiwu Lei Tingwu Wang Wei Feng Yaoze |
| Institution: | 1.College of Engineering and Technology;Huazhong Agricultural University;Wuhan 430070;China2.Oil Crops Research Institute;Chinese Academy of Agricultural Sciences;Wuhan 430062;China3.Institute of Soil and Water Conservation;Chinese Academy of Sciences and Ministry of Water Resources;Yangling;Shaanxi 712100;China |
| Abstract: | Three kinds of soil from Hubei province was studied,PLS and cross calibration method was employed to establish soil moisture analysis model.The result indicates that the model's decision coefficient was 0.995,and RMSECV was 0.801%,the model's forecast decision coefficient was 0.992,the RMSEP was 0.912%.Using the model to forecast loessial soil on Loess Plateau region,the error was greater than 4%.At last,the study of the Hubei yellow brown earth,paddy field soil and alluvial soil samples collected from Four... |
| Keywords: | Soil Moisture Near infrared Fourier transform Feature extraction |
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