This paper gives details of the image quality analysis of ASAR alternating polarisation mode APP and APM products performed during the ASAR validation phase. Initially, a description of the analysis methodology and performance assessment tools, image properties and example APP and APM products is given followed by the image quality analysis. This analysis includes format verification, visual in...

RESUME The paper presents the results of land cover and crops identification achieved on the basis of the time series of 27 ENVISAT -1/ ASAR images acquired in Image Mode and Alternating Polarization Mode during the 2003 observing campaign for Malbork test site in northern Poland. The results are compared with those obtained from SPOT -4 multitemporal data. High degree of their similarity has b...

A first geophysical validation of the ASAR Wave Mode Level 2 product is performed using ASAR Wave Mode data acquired during May 2002, which have been co-located with ECMWF WAM spectra and wind speed data. First calibration results and a comparison of wind speed and wave spectral parameters are presented and discussed. The performance of the product is as expected, with very good agreement in te...

One of the objectives of Forest Dragon 2 project is the generation of a forest cover change map between 1990s and 2000s for Northeast China based on ERS-1/2 tandem data and ENVISAT ASAR data. For the 1990s’ map, an automatic and seasonal-adaptive retrieval of forest biomass method was used to produce a forest biomass map based on the ERS tandem interferometric coherence. The biomass map was int...

Most paddy rice in the world grows in warm, humid and rainy environment where it is hard to acquire optical remote sensing data. Synthetic Aperture Radar (SAR) can acquire remote sensing information due to its all weather imaging and frequent revisit capability in the areas. A semi-empirical backscattering model was used to estimate leaf area index (LAI) from ENVISAT ASAR (Advanced Synthetic Ap...