(H/T Singularity Hub)
This Stonehenge-like arrangement of objects radiating outward, with fighter jets at its center, is almost certainly a calibration/test target for orbital radar instruments, Hill said. The bumps in the terrain around the planes scatter radar away from the area, partially masking the planes. By testing radar return from this structure using radar instruments flying overhead, Chinese radar experts can learn how best to hide China's military operations from other countries' spy satellites.
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