Sensor Specifications: ENVISAT-1

ENVISAT-1 is a European Space Agency satellite launched 1 March 2002. The sensors of interest to health studies are Advanced Along Track Scanning Radiometer (AATSR), Advanced Radar Altimeter (RA-2), Advanced Synthetic Aperture Radar (ASAR), and Medium Resolution Imaging Spectrometer (MERIS). This satellite has a polar, circular, sun-synchronous 782-km orbit with a 35-day repeat cycle. RA-2 is a radar altimeter for monitoring ocean topography. ASAR's swath width is 400 km, while MERIS's swath width is 1150 km.



Band Wavelength of Band Center (µm) Resolution (m)
1 0.555 (green) 1000
2 0.659 (red) 1000
3 0.865 (NIR) 1000
4 1.6 (SWIR) 1000
5 3.7 (TIR) 1000
6 10.85 (TIR) 1000
7 12.0 (TIR) 1000


Band Frequency (GHz) Resolution (m)
SAR C ? 30

MERIS (Progammable)

Bands Wavelength (µm) Resolution (m)
up to 15 0.390-1.04 300 and 1200

Data Sources

Data availability can be found at the following location:

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Last updated: July 2003