3 ms·
Is that actually true here? Satellite constellations move in complicated ways, so a receiver should be able to detect "impossible" configurations if the stream
by rlpb 1y ago
Is that actually true here? Satellite constellations move in complicated ways, so a receiver should be able to detect "impossible" configurations if the stream from only one satellite is delayed. If they are all delayed, then wouldn't that also cause the receiver's position to fail to resolve?
- londons_explore 1y agoAn attacker can receive all streams, delay the data from each satellite a variable amount, then retransmit them all again to appear to be in a different location. Then also delay signals from other gnss providers to match. I have witnessed this done in Iraq, so someone has already built the capability.
- rlpb 1y agoA variable amount is what I was missing. That makes sense now, thanks.