DWL002 Chinese Passive Detection Radar System

The DWL002 Chinese Passive Detection Radar System is designed for air defense and coastal surveillance, capable of detecting, locating, and identifying airborne and surface targets while displaying their flight paths in real time. It complements active radars within a comprehensive reconnaissance network. The system consists of three containerized units: a master station and two auxiliary stations mounted on high-mobility vehicles. An optional additional auxiliary station can be included for complete coverage of azimuth and elevation parameters. Each unit features hydraulically retractable antennas, a power generation system, and automatic leveling for rapid deployment. The stations communicate over microwave links, even when separated by distances exceeding 50 kilometers, enhancing target measurement accuracy. The system intercepts targets' radio frequency (RF) emissions from onboard radar, jamming systems, Identification Friend or Foe (IFF) systems, and other sources. It also utilizes reflections from terrestrial television and FM signals to passively locate targets. For azimuth and elevation measurements, the system employs Time Difference of Arrival (TDoA) and Angle of Arrival (AoA) techniques using two paired primary wideband apertures at different heights to determine target altitude. The apertures are housed in composite cylindrical radomes for protection, with the lower mounted on a telescopic mast and the upper supported by a folding mast. Additionally, servo-controlled parabolic antennas operate in the X-band or Ku-band, facilitating high-speed data transmission between units. Each equipment container has three Yagi antennas to intercept civilian television and FM signals reflected by detected targets.