3 ms·
The military’s been able to distinguish this since the early 90s — at least. And yes modern drones didn’t exist in the 90s but other similarly-sized machines di
by runjake 6y ago
The military’s been able to distinguish this since the early 90s — at least. And yes modern drones didn’t exist in the 90s but other similarly-sized machines did, eg balloon-mounted telemetry devices.
Citation: personal experience with those sensor systems.