Title :
Correction of SAR imagery for variation in pixel scattering area caused by topography
Author :
Luckman, Adrian J.
Author_Institution :
British Nat. Space Centre, UK
fDate :
1/1/1998 12:00:00 AM
Abstract :
The radiometric correction of synthetic aperture radar (SAR) imagery for topographically induced changes in the pixel scattering area is examined. The relative significance of ground slope in the range and azimuth directions is compared, and a widely used correction factor, based on the sin of the local radar incidence angle, is shown to be sufficiently accurate. The importance of performing this correction in slant range, rather than ground range, is demonstrated
Keywords :
forestry; geophysical techniques; radar imaging; remote sensing by radar; synthetic aperture radar; SAR imagery; forest; geophysical measurement technique; ground range; ground slope; land surface; pixel scattering area; radar imaging correction; radar incidence angle; radar remote sensing; radiometric correction; slant range; synthetic aperture radar; terrain mapping; topographically induced change; topography; vegetation mapping; Azimuth; Pixel; Radar scattering; Radiometry; Rayleigh scattering; Remote sensing; Surface topography; Synthetic aperture radar; Temperature; Thermal conductivity;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
