ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

基于近紅外傅里葉特征提取方法的土壤含水率檢測
CSTR:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號:

基金項目:


-infrared Spectral Detection of Soil Moisture Based on Feature Extraction of FFT
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 圖/表
  • |
  • 訪問統(tǒng)計
  • |
  • 參考文獻
  • |
  • 相似文獻
  • |
  • 引證文獻
  • |
  • 資源附件
  • |
  • 文章評論
    摘要:

    以湖北地區(qū)的3種土壤為研究對象,,利用偏最小二乘法建立了處理后樣品的土壤含水率分析模型,,模型預測值與標準值的決定系數(shù)為0.995,交叉驗證預測均方差為0.801%,,模型預測決定系數(shù)為0.992,,預測均方差為0.912%,利用該模型預測黃土高原地區(qū)黃綿土含水率誤差均大于4%,。利用近紅外光譜傅里葉變換特征提取方法對湖北地區(qū)黃棕壤,、稻田土和潮土建立土壤含水率PLS預測模型,模型決定系數(shù)為0.988,,交叉驗證預測均方差為1.106%,,且該模型預測黃綿土的誤差均在2%左右,精度較傳統(tǒng)模型有較大提高,。

    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 Fourier transform parameters and characteristics of soil moisture to establish PLS prediction model, model decision coefficient was 0.988, and RMSECV is 1.106%. And the error of model prediction of loessial soil was less than 2%, the accuracy improved more greatly than traditional model.

    參考文獻
    相似文獻
    引證文獻
引用本文

李小昱,肖武,李培武,雷廷武,王為,馮耀澤.基于近紅外傅里葉特征提取方法的土壤含水率檢測[J].農(nóng)業(yè)機械學報,2009,40(5):64-67.-infrared Spectral Detection of Soil Moisture Based on Feature Extraction of FFT[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(5):64-67.

復制
分享
文章指標
  • 點擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期:
  • 出版日期:
文章二維碼