This chapter has dealt with the relevance of using stereoscopic radar images in order to retrieve the relief of terrain. Firstly, the basic characteristics of the radar image (SAR image) were described and the parameters which were different from those of an optical image werepointed out especially the image resolution and set up in the slant plane. Other characteristics such as the geometric and radiometric distortions were described in the rest of the section. These distortions have to be taken into account in radar stereoscopic applications in order to determine the better viewing parameters and avoid the consequences of specific radar image geometry (for example, foreshortening) and radiometry (for example, speckle effect). In the second part, we presented the radargrammetric method applied to radar images and how