Conically scanning Ka and W band atmospheric radars (e.g. the radars in the Tomorrow.IO constellation and the WIVERN (WInd VElocity Radar Nephoscope) radar) will be introduced in the global satellite observing system. Traditional calibration methods pointing at sea surface at about 12 degrees incidence angle are not feasible for such systems. Therefore, the development of new methodologies for calibrating these systems is needed. This thesis demonstrate the effectiveness of calibrating spaceborne conically scanning radars using cross-calibration with other spaceborne radar working on the same band and orbiting around Earth in the same period of time (e.g. the Ka-band GPM radar or the W-band radars planned for the NASA AOS missions) as reference.