China has developed a groundbreaking space surveillance camera using synthetic aperture lidar (SAL) technology, capable of capturing details as small as 1.7 millimeters from over 100 kilometers away. This advancement, demonstrated in a field test over Qinghai Lake, surpasses previous imaging systems in precision and range, enabling China to track foreign satellites, identify vulnerabilities in rival space programs, and monitor classified military activities. Despite its capabilities, the technology faces limitations in tracking fast-moving targets and requires clear weather conditions for optimal performance.