China constructs far-reaching radar system as defense against asteroid impact

http://en.people.cn/n3/2022/0711/c90000-10121183.html

The new observation facility in Chongqing, codenamed 中国复眼 Zhongguo Fuyan [China compound eye] will consist of distributed radars with more than 20 antennas, and each antenna will have a diameter of 25 to 30 meters. Working together, they are expected to carry out high-definition observation of asteroids within 150 million kilometers. Project leader is the Beijing Institute of Technology Chongqing Innovation Center, partners are CAS National Astronomical Observatories, Tsinghua University and Peking University.