A new microwave backscattering model for vegetated areas was developed. It enables the separation of the soil and vegetation contributions to the backscattering coefficient, which is crucial to obtain reliable simulation results for different imaging geometries. It is shown, that the vegetation influence on the signal can be directly derived from ENVISAT ASAR alternating polarization data. It i...

We show how and why it makes sense to use a relational formalisation instead of the usual functional one in the treatment of term graphs. Special attention is paid to term graphs with bound variables, that have, to our knowledge, never been formalised with such a generality before. Besides the novel treatment of term graphs themselves, we present an innovative relational homomorphism concept th...

Optical vegetation indices (VIs) have been used to retrieve and assess biophysical variables from satellite reflectance data. These indices, however, also are sensitive to a number of confounding factors, such as canopy geometry, soil optical properties, and solar position. This suggests that VIs should be used cautiously for biophysical parameter estimation. Among biophysical variables, chloro...

Introduction: High-risk pregnancies can result in many complications for the fetus. In these pregnancies, different tests such as non-stress test (NST), biophysical profile (BPP), oxytocin contraction stress test (OCT), and Doppler sonography can be used to evaluate fetal health. As standard BBP requires more time and expertise, in this study, we evaluated the relationship between standard BPP,...

Ala~traet--Errors-in-variables problems are considered for the case of three variables, where the underlying relations among the noise-free variables are linear, and covariance information for the noisy variables is available. The static problem where the variables are complex (which can arise when narrowband filtering is used) is analysed in detail. Some results are also presented for the case...

This ATBD (Algorithm Theoretical Based Document) describes the proposed algorithm for Level 2 biophysical land products derived from MERIS top of canopy reflectance data with justification of the choices made. The biophysical land products considered are the following set of biophysical variables: LAI, fCover, CB ab B and LAI.CB ab B. The algorithm accepts as inputs the top of canopy reflectanc...

In this paper, we present an improved procedure for collecting no or little atmosphereand snow-contaminated observations from the Moderate Resolution Imaging Spectroradiometer (MODIS) sensor. The resultant time series of daily MODIS data of a temperate deciduous broadleaf forest (the Bartlett Experimental Forest) in 2004 show strong seasonal dynamics of surface reflectance of green, near infrar...