Principal Component Analysis Based Polynomial Chaos Expansion Regression of Leaf Area Index from Polsar Imagery


Çelik M. F., Erten E.

2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS, Brussels, Belgium, 11 - 16 July 2021, pp.6096-6099

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1109/igarss47720.2021.9554929
  • City: Brussels
  • Country: Belgium
  • Page Numbers: pp.6096-6099
  • Istanbul Technical University Affiliated: Yes

Abstract

Predicting biophysical parameters with high accuracy and fast speed based on remote sensing-based modeling is an attractive topic. In this context, the revisit time, coverage, and illumination condition in-dependency make the Polarimetric Synthetic Aperture Radar (PoISAR) data is an attractive tool. In this paper, one of the most studied biophysical parameters, Leaf Area Index (LAI), is chosen to assess Polynomial Chaos Expansion (PCE) regression, commonly used metamodeling due to its precise and rapid approximation performance. Experimental analysis based on AgriSAR 2009 campaign, including oat and canola, is given to validate the PCE in the regression. According to the accuracy analysis, the Pearson correlation of 88% and 95% for oat and canola, respectively, were achieved.