Análise Comparativa do CBERS-2 e Imagens de Satélite Landsat-TM em Cartografia da Vegetação
| Autor: | Jinmu Choi, Sami Khanal, Shrinidhi Ambinakudige |
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| Jazyk: | English<br />Portuguese |
| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | Revista Brasileira de Cartografia, Vol 63, Iss 1 (2011) |
| Druh dokumentu: | article |
| ISSN: | 0560-4613 1808-0936 |
| Popis: | Moderate resolution sensors such as Landsat satellites are a vital component of earth observation and required in a wide variety of applications across many disciplines. Failure of Landsat 7 and the aging Landsat 5 could create a data gap for studies depending on medium resolution satellite data in the near future. The objective of this paper is to investigate the compatibility of CBERS-2 satellite data with the Landsat-TM satellite in land use and land cover change studies. We compared Landsat-TM and CBERS-2 Charge Coupled Device (CCD) images using four methods: intra bands similarities of reflectance values, land cover classification, vegetation indices (SR, NDVI, and TNDVI), and water index (NDWI), and found that CBERS-2 and Landsat-TM are very similar. Despite the differences in spatial resolution, coverage area and data availability between CBERS-2 and Landsat-TM, CBERS-2 was comparable to Landsat-TM and thus appears to be useful in the studies requiring vegetation mapping. To confirm the similarities of CBERS-2 and Landsat-TM data in vegetation mapping, more studies in different eco-regions are needed. Furthermore, inconsistencies in CBERS-2 data quality and availability are limitations of using CBERS-2 as an alternative source of medium resolution data in vegetation mapping. |
| Databáze: | Directory of Open Access Journals |
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