Optical vs. microwave image geometry

The figure presents a comparison between respective geometries of radar image and oblique aerial photos.
The reason for the major differences between the two image's geometry is that an optical sensor measures viewing angles, while a microwave imagers determines distances.

Keywords: ESA European Space Agency - Agence spatiale europeenne, observation de la terre, earth observation, satellite remote sensing, teledetection, geophysique, altimetrie, radar, chimique atmospherique, geophysics, altimetry, radar, atmospheric chemistry