Jute Crop Discrimination and Biophysical Parameter Monitoring Using Multi-Parametric SAR Data in West Bengal, India

Dipanwita Haldar, Chakrapani Patnaik, Manab Chakraborty

Space Applications Centre, Ahmedabad, India.

DOI: 10.4236/oalib.1100817                

Abstract

The article highlights the results of a study carried out to understand the Synthetic Aperture Radar (SAR) response to the second most important fibre crop of India i.e. Jute at C and L band frequency and at multiple polarizations. Methodology has been well established to classify jute crop using 3-date multitemporal HH SAR data and is being used for national level forecast in India. Performance comparison of single polarization (HH) multi-date versus dual-polarization 2-date data from Radarsat (both dual-pol HH/HV and quad-pol) was evaluated. Three-date HH polariza-tion (May, 05, May 29 and June 22) data had results comparable to two-date HH/HV data with around 90% accuracy. Correlation between backscattered signals and crop height shows that L-band signal has high correlation with crop height particularly in the peak or advanced crop growth stage as compared to C-band. Also backscatter variation with percent area cover has been investigated. Both plant height and area cover show stronger dependence to cross-polarization backscatter. Biophysical parameters viz. crop height and vigour map has been generated which will aid in monitoring growth and yield potentials.

Keywords

Jute Identification, Backscatter, Multi Polarization Data, Multifrequency SAR, Plant Biophysical Parameters, Plant Height, Plant Vigour

Conflicts of Interest

The authors declare no conflicts of interest.

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