JY-50 Chinese 2D Air Defense Radar

JY-50 is a passive 2-D radar that uses the electromagnetic signals transmitted by distributed radio frequency stations around itself, including civilian mobile phone, radio, and television broadcasts, to perform the detection, location, and tracking of airborne targets including electromagnetic silence targets (so-called Stealth aircraft). JY-50 radar mainly accomplishes air defense warning missions too the important directions and sensitive areas. The antenna is an array of two rows of 12 inverted Vee elements backed by a reflective grating.