A Tower-Based Radar Study of Temporal Coherence of a Boreal Forest at P-, L-, and C-Bands and Linear Cross Polarization

Cross-polarized temporal coherence observations of a boreal forest, acquired using tower-based radar, are presented in this article. Temporal is analyzed with respect to frequency, baseline, time day observation, season, meteorological variables, and biophysical variables. During the summer, P- L-band exhibited diurnal cycles, which appeared be due high rates transpiration convective winds during day. winter, freeze-thaw cycles precipitation resulted decorrelation. At baselines seconds hours, was observed even at C-band. The best observation times were midnight dawn. main limitation accuracy interferometric tomographic forest applications. from experiment will allow for better spaceborne SAR mission designs applications, decorrelation modeling, more accurate parameter estimation algorithms data.