“Stealth” Drones. How can a drone be “stealthy” if it must be constantly transmitting data in order to be remotely operated? Isn’t radio silence a requirement for stealth in the modern battlefield?
In: Technology
Several ways to do that.
The easiest is to not transmit, just program it with “Follow this path, record everything, then go back home so we can look at it.”.
If you need realtime data, you need to transmit. It can be done through very directional antennas. Of course, that is risky, because it’s easy to lose contact. It can use fancy techniques such as frequency hopping and burst transmissions. So, they send data in very short bursts, and between each burst, they change frequency according to a secret schedule. This makes it very hard to snoop on or triangulate any locations. ELI5-version would be to compare it to having a shitload of telephones at each end, and use a new phone for every word you send. That would make it very hard for anyone to snoop on, as they don’t know which numbers to listen to, and it’ll all be very chopped up.
Either way, expect heavy encryption and verification protocols.
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