Multitemporal repeat-pass SAR interferometry of boreal forests

摘要: Multitemporal interferometric European Remote Sensing 1 and 2 satellite tandem pairs from a forest test site in Finland are examined order to determine the stem volume retrieval accuracy. A form of multitemporal filtering is introduced investigate what stands show consistency coherence. It found that large stand size major factor obtain accurate retrievals. The effect heterogeneity also discussed. Based on showing highest different models for scattering coherence compared. water cloud model chosen retrieval. variation parameters with meteorological investigated results illustrate best imaging conditions obtained subzero temperatures windy conditions. shown 20 can be retrieved relative error 21%, deteriorating when number testing increased, e.g., 80 48%. For 37 representing 48% area 26%. With experience another Sweden we may conclude level synthetic aperture radar evaluation (>2 ha) well managed homogeneous boreal expected 15% 25% range, small heterogeneous images acquired under nonwinter