Comparative evaluation of inversion approaches of the radiative transfer model for estimation of crop biophysical parameters

• Autorzy: Mridha N. , Sahoo R. N. , Sehgal V. K. , Krishna G. , Pargal S. , Pradhan S. , Gupta V. K. , Nagesh Kumar D.
• Języki publikacji: EN

Abstrakty

EN

The inversion of canopy reflectance models is widely used for the retrieval of vegetation properties from remote sensing. This study evaluates the retrieval of soybean biophysical variables of leaf area index, leaf chlorophyll content, canopy chlorophyll content, and equivalent leaf water thickness from proximal reflectance data integrated broad bands corresponding to moderate resolution imaging spectroradiometer, thematic mapper, and linear imaging self scanning sensors through inversion of the canopy radiative transfer model, PROSAIL. Three different inversion approaches namely the look-up table, genetic algorithm, and artificial neural network were used and performances were evaluated. Application of the genetic algorithm for crop parameter retrieval is a new attempt among the variety of optimization problems in remote sensing which have been successfully demonstrated in the present study. Its performance was as good as that of the look-up table approach and the artificial neural network was a poor performer. The general order of estimation accuracy for para-meters irrespective of inversion approaches was leaf area index > canopy chlorophyll content > leaf chlorophyll content > equivalentleaf water thickness. Performance of inversion was comparable for broadband reflectances of all three sensors in the optical region with insignificant differences in estimation accuracy among them.

• Wydawca: -
• Czasopismo: International Agrophysics
• Rocznik: 2015
• Tom: 29
• Numer: 2
• Opis fizyczny: p.201-212,fig.,ref.

Twórcy

autor

Mridha N.

• Division of Agricultural Physics, Indian Agricultural Research Institute, New Delhi-110012, India

autor

Sahoo R. N.

• Division of Agricultural Physics, Indian Agricultural Research Institute, New Delhi-110012, India

autor

Sehgal V. K.

• Division of Agricultural Physics, Indian Agricultural Research Institute, New Delhi-110012, India

autor

Krishna G.

• Division of Agricultural Physics, Indian Agricultural Research Institute, New Delhi-110012, India

autor

Pargal S.

• Division of Agricultural Physics, Indian Agricultural Research Institute, New Delhi-110012, India

autor

Pradhan S.

• Division of Agricultural Physics, Indian Agricultural Research Institute, New Delhi-110012, India

autor

Gupta V. K.

• Division of Agricultural Physics, Indian Agricultural Research Institute, New Delhi-110012, India

autor

Nagesh Kumar D.

• Department of Civil Engineering, Indian Institute of Science, Bangalore 560 012, India

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Uwagi

PL

Identyfikatory

DOI

10.1515/intag-2015-0019