The advantage of ENVISAT ASAR over its predecessors, namely ERS-1 and ERS-2, as a land observation tool resides in its multiple polarization and multi-look angle capabilities. As a radar sensor the ASAR backscattering coefficient is sensitive to the moisture content of the scattering media and its geometrical properties (i.e. size, shape, roughness, and orientation). From the quantitative analy...

Motivation Functional and taxonomic analyses are critical steps in understanding interspecific interactions within microbial communities. Currently, such analyses are run separately, which complicates interpretation of results. Here we present the ASAR interactive tool for simultaneous analysis of metagenomic data in three dimensions: taxonomy, function, metagenome. Results An interactive dat...

This project focuses on ASAR backscatter change from urban categories as a function of polarisation and incidence angle. Results show more bright scattering points from manmade objects in like-pol than in cross-pol. ASAR AP data acquired with several incidence angles may be used with success to obtain more knowledge about structural properties of certain man-made objects.

INTRODUCTION Abdominosacral resection (ASR) usually required blood transfusions, which are virtually no longer in use in the modified abdominosacral amputation of the rectum (ASAR). The aim of this study was to compare the intra-operative bleeding in low-rectal patients subjected to ASR or ASAR. MATERIAL AND METHODS The study included low-rectal cancer patients subjected to ASR (n = 114) or A...

A surface soil moisture (SSM) product at a 1-km spatial resolution derived from the Envisat Advanced Synthetic Aperture Radar (ASAR) Global Monitoring (GM) mode data was evaluated over the entire African continent using coarse spatial resolution SSM acquisitions from the Advanced Microwave Scanning Radiometer for Earth Observing System (AMSR-E) and the Noah land surface model from the Global La...

Spaceborne active radar remote sensing, e.g., radar altimeter (RA) and synthetic aperture radar (SAR) have been playing an important role in the validation of numerical wave models, particularly in open ocean. Most forecast centres also use altimeter data in the wave data assimilation process. In this paper we present validation results based on the newly developed CWAVE_ENV algorithm. SAR wave...

The ability to geolocate ENVISAT ASAR image products and transform them into a map projection is a critical step required to enable not only overlays with other sources of information (e.g. DEM, GIS layers), but even with other ASAR products, especially those acquired with a different track, beam, or incidence angle. This paper summarises geolocation validation results evaluating both the relat...

ضرورت دسترسی به کاربردهای وسیع تصاویر ابرطیفی سبب توسعة سیستم‌های تصویربرداری نوآورانه و اقتصادی در ثبت این شده است. به‌منظور استفاده از تصاویر، لازم است ارتباط هندسی دقیقی میان آنها فضای زمین برقرار شود فرایند نیازمند نقاط کنترلی بسیاری نکته راهکارهای اصلاح منطبق با ساختار هریک دوربین‌ها را بارز می‌کند. سنجندة (nm 400-1000) BaySpec OCI-F یکی نوآورانه‌ای که هندسة پوش‌بروم دریافت سنجنده، علاوه‌ب...

The estimation of geophysical parameters from SAR data necessitates well calibrated sensors with good radiometric precision. In this paper, the radiometric calibration of ASAR/ENVISAT sensor was assessed by comparing ASAR data with ERS-2 and RADARSAT-1 SAR data. With regard to recent data, acquired at the end of 2005, the difference varies from -0.72dB to +0.72dB, with temporal variations that ...