Recent progress in space-borne radar technology and inversion techniques for radar measurements

The paper presents recent progress of the state of the art of space-borne radar technology in case of either earth-orbiting or planetary-orbiting satellites and space probes, respectively. In addition to that recent progress is also discussed concerning specific inversion techniques to evaluate radar measurements, i.e. the art of deriving the relevant physical quantities to be determined such as terrain and depth profiles for planetary surface or/and subsurface structures (3D-profiles) from radar data measured depending on signal frequency, aspect angle, polarization, etc. as a function of time.