Temporal decorrelation of vegetation by environmental and seasonal effects

摘要

The temporal decorrelation of forests in response to environmental and seasonal effects is computed using the Michigan fractal-based coherent scattering model. Frequencies ranging from P- through X-band are considered. Substantial decorrelation (/spl alpha/>0.5) is observed for wind-blown trees at C-band and higher. Soil moisture does not, have a significant influence on decorrelation to (/spl alpha/<0.9). Finally, decorrelation is noted to increase with tree height and to decrease with defoliation.