DocumentCode :
326243
Title :
Application of RADARSAT multi-date data to monitor the seasonal spread of macrophyte beds in the Tucurui Reservoir, Brazilian Amazon
Author :
De Moraes Novo, E. ; Costa, Maycira P F ; Mantovani, José Eduardo
Author_Institution :
Div. de Sensoriamento Remoto, Inst. Nacional de Pesquisas Espaciais, Sao Jose dos Campos, Brazil
Volume :
2
fYear :
1998
fDate :
6-10 Jul 1998
Firstpage :
831
Abstract :
This paper reports the results of a study performed to assess the suitability of C band RADARSAT data to monitor the spread of macrophyte stands in the Tucurui reservoir along the year. Three RADARSAT images were obtained concurrently to ground data acquisition: May, August and November 1996. The images are CEOS RADARSAT format, single beam detected product, 16 bit unsigned data, SAR georeferenced fine resolution (SGF), standard mode with low incidence angle (S5 and S6), 12.5 by 12.5 m pixel spacing; and 1 (range) by 4 (azimuth) looks. They were calibrated, corrected for antenna pattern and geometry. Several textural measures were derived for each image to test their suitability to improve the discrimination of the following classes: dead tree trunks, macrophyte stands, forest land and open water. The result shows that the inclusion of the textural information does not prevent misclassification of macrophyte and forest
Keywords :
geophysical signal processing; image texture; radar imaging; remote sensing by radar; 16 bit unsigned data; Brazilian Amazon; C band; CEOS RADARSAT format; RADARSAT images; RADARSAT multi date data; SAR georeferenced fine resolution; Tucurui Reservoir; antenna pattern; correction; dead tree trunks; forest land; geometry; ground data acquisition; macrophyte beds; macrophyte stands; misclassification; open water; seasonal spread; single beam detected product; standard mode with low incidence angle; textural measures; Antenna measurements; Azimuth; Data acquisition; Geometry; Image resolution; Monitoring; Pixel; Radar detection; Reservoirs; Testing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Geoscience and Remote Sensing Symposium Proceedings, 1998. IGARSS '98. 1998 IEEE International
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-4403-0
Type :
conf
DOI :
10.1109/IGARSS.1998.699598
Filename :
699598
Link To Document :
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