In general, existing systems detect alerts from large-scale analysis of medium-resolution satellite imagery (10 to 80 m resolution). These images are revisited weekly or fortnightly and allow for the identification of deforestation alerts, but without many options for analysis at the rural property level, given the spatial resolution and low frequency of image acquisition.
In MapBiomas Alerta, deforestation alerts produced by the various monitoring initiatives are gathered, validated and refined using daily images with 3 m resolution. Each alert generated is accompanied by a high-resolution image of before and after the deforestation, similarly to the photo of the license plate of the vehicle in traffic infractions.