At Paris in June 2009 and again at Zhuhai in November, the Chinese displayed drawings of a new SW-6 anti-radar unmanned aerial vehicle (UAV). It is characterized as a "radar-interfering UAV," which might mean either that it will simply jam a target radar, or that it could act as a decoy. It would be dropped by attack aircraft loitering near a strike group to jam its radars. Thanks to shrinking electronics, the SW-6 would weigh only 20 kg. No photographs were displayed, so presumably it is only in the design stage.
World Naval Developments: All Jammed Up
By Norman Friedman