Russian engineers from Rostec have come up with a way to find even those drones that were previously considered almost elusive. To do this, a new passive fiber-optic radar called 3D radar was created, which can detect drones without using its own signal.
How does it work?
Conventional radars work like this: they send a signal and catch a reflection. But if a drone flies without radio signals — for example, wired or controlled via cable — then such a device simply cannot be detected. This is where the new system from Rosel, a subsidiary of Rostec, comes into play.
This radar does not emit anything by itself — it "listens" to signals from external sources, for example, from TV towers or radio stations. If an object, such as a drone, flies by and intercepts or distorts these signals, the radar analyzes them and calculates the coordinates of the target.
Why is it cool?
— It doesn't glow by itself. Since the radar does not emit anything, it cannot be detected by radio intelligence. That is , he remains invisible to the enemy.
— Catches "dumb" drones. It is especially effective against wired drones that do not use a radio channel at all — they used to be almost impossible to find.
— Long range range. For example, a light-engine aircraft can be detected by a device tens of kilometers away.
The system was developed by the Vector Research Institute, specializing in radar technologies.
Recently it became known that an interesting system has also been created based on another Russian station, Lori. This is the LIS-A radar and optical complex, which not only finds objects, but also recognizes who it is: a drone, a person, or, say, an animal. And then transmits all the information to the operator automatically.
With the advent of such technologies, it becomes more difficult to use "invisible" drones for espionage or attacks. Russian developers are clearly not going to keep up with the times — and are making their systems smarter and more powerful.
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