Teledetection principles and applications to oceanography (elevation, temperature, ocean color, surface wind, salinity, ...), atmospheric sciences (water vapor, temperature profile, cloud and rain characterization, chemical constituents, ozone layer, ...), terrestrial surfaces (elevation, natural vegetation, soils humidity, agriculture, anthropic vegetation, urban development, natural disaster surveys, ...).  We will cover passive and active teledetection over a large frequency domain (from microwaves to UV).