Índice de vegetação Red Edge nas bandas B05, B06 E B07 do Sentinel-2

Abstract

Satellite Sentinel-2 makes 13 bands available free of charge on several platforms with the MSI instrument, 4 bands in visible and infrared, 6 bands in Red Edge and shortwave infrared and 3 bands for atmospheric corrections. Among the Red Edge bands, those between 705 and 783 nm can be used to calculate vegetation indices. Thus, the objective was to evaluate the Red Edge vegetation index calculated from Bands B05 (705 nm), B06 (740 nm) and B07 (783 nm), for the soybean crop, in the 2022/2023 harvest. The orbital images were transmitted through the free Sentinel HUB platform, L2A product, with satellite revision intervals of 5 days. The vegetation indices were calculated using the free platform software, QGIS. As a control, the vegetation index by normalized difference (NDVI) was calculated, the most used index in agriculture. The B5 band of the Sentinel 2 satellite is important for the spirituality of the normalized difference Red Edge index (NDRE) values and also for analysis and comparison with the NDVI. The bands B6 and B7 of the Sentinel 2 satellite are not considered suitable for use in the NDRE calculator and in the proposed classification of vegetation indices. The NDRE has a lower value than the NDVI, allowing a longer analysis of crop development.