Title :
Multitemporal analysis of ERS-1 SAR images over land areas
Author :
Weydahl, Dan Johan
Author_Institution :
Norwegian Defence Res. Establ., Kjeller
Abstract :
ERS-1 SAR images have only one frequency and polarization. Analysis and classification of ground features is thus a difficult task. However, combining several SAR images acquired at different times over the same area, shows an increase in the overall classification result. However, this result depends highly on the image combination, number of images, and speckle filter method used. Multitemporal analysis may also be used to increase knowledge of radar backscatter from different vegetation and surface categories throughout the season
Keywords :
geophysical techniques; geophysics computing; image recognition; image sequences; remote sensing by radar; synthetic aperture radar; C-band microwave; ERS-1; SAR; SAR imaging; geophysical measurement technique; ground feature; image classification; image combination; image sequences; land surface terrain mapping; multitemporal analysis; radar backscatter; speckle filter; surface category; synthetic aperture radar; vegetation; Azimuth; Backscatter; Frequency; Image analysis; Pixel; Rough surfaces; Satellites; Soil moisture; Surface roughness; Synthetic aperture radar;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1993. IGARSS '93. Better Understanding of Earth Environment., International
Conference_Location :
Tokyo
Print_ISBN :
0-7803-1240-6
DOI :
10.1109/IGARSS.1993.322741
