Iran begins attack, launching dozens of drones that'll take hours to arrive

[u/Currymvp2]

https://www.timesofisrael.com/liveblog_entry/report-iran-begins-attack-on-israel-launching-dozens-of-drones-thatll-take-hours-to-arrive/

[u/Salt_Ad7152]

Dozens, and GPS was supposedly jammed in Israel?

[u/yyyyyl5 → u/Salt_Ad7152]

The gps part is intentional, its to mess with the drone navigation system

[u/Psshaww → u/yyyyyl5]

Wouldn’t these drones just use glonass or the Chinese equivalent?

[u/flag_ua → u/Psshaww]

Those are probably being jammed too. All of these systems basically just work by satellites screaming their position and time, while the receiver does the math to triangulate its position. Jamming these systems just means making something that pretends that to be those satellites, by screaming false position and time data

[u/Psshaww → u/flag_ua]

I would figure they used encrypted military signals so you can’t just spoof it

[u/[deleted] → u/Psshaww]

Doesn't matter how well encrypted your message is if your destination can't hear it because of noise. Jamming is basically blaring a soundhorn in a conversation, doesn't matter witch language is being spoken.

[u/Psshaww → u/[deleted]]

Wonder if there's some directionality built in that only looks for a signal emanating from above it, where a satellite would be, and ignore a jammer that's below the aircraft.

[u/RecentlyUnhinged → u/Psshaww]

Doesn't really work like that because satellites move horizon to horizon, they don't just sit above you (GEO not withstanding ofc).

Meaning there's plenty of instances where a sat you want to talk to is low above the horizon, where as the aircraft jamming you is "above" it.

Edit: just saw you were referring to GPS rcv's on airborne assets too. Still doesn't work for much the same reasons, including that the equipment to identify where the signal is in relation to you adds a ton of weight and complexity.

[u/Exita → u/Psshaww]

Hard to spoof, still very jam-able unfortunately. The signals used by these systems are inherently pretty weak, so easy just to blare out shit over the same frequencies and block them out. The encrypted signals are slightly less fragile, but not by much.

[u/Salt_Ad7152 → u/yyyyyl5]

Shut off GPS to mess with the DGS

[u/jeremiah256 → u/Salt_Ad7152]

Or they’ll just default to using dead reckoning. As long as they hit anywhere in Israel, the Iranians will consider it a success.

We made it 100,000 years as the dominant species. Time to tag in the cockroaches.

[u/ethanarc → u/jeremiah256]

The Iranians will consider it a success, but the civilian impact will be dramatically reduced. Israeli air defense systems are set up for automatic algorithmic prioritization of capacity for covering urban areas. Less drones hitting urban areas means more air defense capacity in the system overall.

[u/jeremiah256 → u/ethanarc]

I hope you’re right.

I was joking about WW III, but Israel suffering major casualties this soon after October 7th? I don’t even want to think about it.