您好，欢迎访问北京市农林科学院 机构知识库！
北京市农林科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Comparison and Analysis of Data Assimilation Algorithms for Predicting the Leaf Area Index of Crop Canopies

文献类型： 外文期刊

作者： Dong, Yingying 1 ; Wang, Jihua 1 ; Li, Cunjun 2 ; Yang, Guijun 2 ; Wang, Qian 2 ; Liu, Feng 2 ; Zhao, Jinling 2 ; Wang, H 1 ;

作者机构： 1.Zhejiang Univ, Inst Agr Remote Sensing & Informat Syst Applicat, Hangzhou 310003, Zhejiang, Peoples R China

2.Beijing Res Ctr Informat Technol Agr, Beijing, Peoples R China

3.Beijing Res Ctr Informat Technol Agr, Remote Sensing Technol Dept, Beijing, Peoples R China

关键词： Data assimilation;Ensemble Kalman Filtering (EnKF);Four Dimensional Variational Data Assimilation (4DVAR);Leaf Area Index (LAI);Very Fast Stimulated Annealing (VFSA)

期刊名称：IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING （ 影响因子：3.784； 五年影响因子：3.734 ）

ISSN： 1939-1404

年卷期： 2013 年 6 卷 1 期

页码：

收录情况： SCI

摘要： Data assimilation as an approach for crop Leaf Area Index (LAI) estimation has been rapidly developed in the field of agricultural remote sensing. Many studies have attempted to integrate sequential remotely sensed observations in the dynamical operation of physical models, aiming to improve model performance of LAI estimation by using various data assimilation schemes. In this study, a new data assimilation algorithm is proposed. For this algorithm, the background field of free parameters is constructed according to the ensemble construction scheme of EnKF algorithm, and a cost function is constructed based on the cost function construction strategy in 4DVAR algorithm in order to analyse and update the free parameters. The last updated free parameters are input into the model for LAI estimation until all the observations are assimilated. Additionally, the cost function in data assimilation procedure is optimised using VFSA algorithm. Winter wheat in Beijing in 2002 is selected as the experimental object. The crop growth model CERES-Wheat and the radiative transfer model PROSAIL are coupled in the assimilation process. Sequentially observed NDVI of winter wheat are assimilated into the coupled model using different assimilation algorithms to quantitatively compare and analyse the LAI estimation results. The performance of the new algorithm is better than CERES-Wheat model, EnKF algorithm, and 4DVAR algorithm, with a lesser RMSE by 43.68%, 41.67%, and 28.99%, respectively, and with increased R-2 by 110.53%, 90.48%, and 33.33%, respectively. Moreover, for the subset LAI >= 3.00, higher estimation precision and greater efficiency of the new algorithm are obtained.

  • 相关文献

[1]Integrating a very fast simulated annealing optimization algorithm for crop leaf area index variational assimilation. Dong, Yingying,Zhao, Chunjiang,Yang, Guijun,Chen, Liping,Wang, Jihua,Feng, Haikuan,Dong, Yingying,Zhao, Chunjiang.

[2]Leaf Area Index Estimation Using Vegetation Indices Derived From Airborne Hyperspectral Images in Winter Wheat. Xie, Qiaoyun,Huang, Wenjiang,Liang, Dong,Huang, Linsheng,Zhang, Dongyan,Chen, Pengfei,Wu, Chaoyang,Yang, Guijun,Zhang, Jingcheng. 2014

[3]Comparison and Analysis of Data Upscaling Schemes for Predicting Crop Leaf Area Index. Dong, Yingying,Feng, Haikuan,Wang, Jihua,Li, Cunjun,Yang, Guijun,Huang, Wenjiang,Dong, Yingying,Wang, Jihua. 2012

[4]INTEGRATION OF MULTI-RESOLUTION DATA FOR CROP LAI ESTIMATION BASED ON CONTINUOUS WAVELET. Dong, Yingying,Wang, Jihua,Li, Cunjun,Yang, Guijun,Xu, Xingang,Zhao, Jinling,Huang, Wenjiang. 2012

[5]A New Method for LAI Spatial Scaling based on Gaussian Distribution Theory. Dong, Yingying,Wang, Jihua,Li, Cunjun,Xu, Xingang,Zhao, Jinling,Wang, Huifang,Huang, Wenjiang. 2012

[6]Estimating Wheat Yield in China at the Field and District Scale from the Assimilation of Satellite Data into the Aquacrop and Simple Algorithm for Yield (SAFY) Models. Silvestro, Paolo Cosmo,Casa, Raffaele,Pignatti, Stefano,Pascucci, Simone,Yang, Hao,Li, Zhenhai,Yang, Guijun,Huang, Wenjiang. 2017

[7]A model with leaf area index and apple size parameters for 2.4 GHz radio propagation in apple orchards. Guo, Xiu-ming,Guo, Xiu-ming,Yang, Xin-ting,Chen, Mei-xiang,Li, Ming,Wang, Yan-an.

[8]Estimating Winter Wheat Leaf Area Index From Ground and Hyperspectral Observations Using Vegetation Indices. Xie, Qiaoyun,Huang, Wenjiang,Zhang, Bing,Dong, Yingying,Xie, Qiaoyun,Chen, Pengfei,Song, Xiaoyu,Pascucci, Simone,Pignatti, Stefano,Laneve, Giovanni. 2016

[9]A review of data assimilation of remote sensing and crop models. Jin, Xiuliang,Li, Zhenhai,Feng, Haikuan,Xu, Xingang,Yang, Guijun,Jin, Xiuliang,Li, Zhenhai,Feng, Haikuan,Xu, Xingang,Yang, Guijun,Jin, Xiuliang,Li, Zhenhai,Feng, Haikuan,Xu, Xingang,Yang, Guijun,Jin, Xiuliang,Li, Zhenhai,Feng, Haikuan,Xu, Xingang,Yang, Guijun,Kumar, Lalit,Wang, Jihua. 2018

作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：北京市农林科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台