National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
A Research study was conducted to estimate the rice area in the Cauvery delta region of Tamil Nadu in the 2019 kharif season using Sentinel 1A SAR data by the multi-temporal feature extraction. Multi-temporal Sentinel 1A GRD data at VV and VH polarizations were obtained for the study area. These data were processed using MAPscape-RICE software. Sentinel 1A is an active SAR microwave data, that captures the crop characteristics irrespective of the weather condition as well as illumination. Ground truth observations collected during the rice survey were used to derive the rice signature from the processed satellite images. The dB values extracted as signature were then subjected to the Multi-Temporal feature extraction method for delineating the rice-growing areas. Around 1,41,639 ha, 1,25,497 ha, and 1,17,703 ha were mapped as rice-growing areas in Thanjavur, Thiruvarur, and Nagapattinam districts, respectively. Accuracy assessment was done with 40 percent of the ground truth data. The overall classification accuracy was 93.1 percent with a kappa score of 0.86.
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