Re:Planned GPS outages in southern California
by dzhiurgis on Tuesday June 07, 2016 @09:01PM
(#11859282)
Can you jam the only non-encrypted part of GPS?
Re:Planned GPS outages in southern California
by jhayward on Wednesday June 08, 2016 @10:53AM
(#11862615)
Kind of. The GPS signal portfolio is evolving. In the beginning, the encrypted code was broadcast on two frequencies, L1 and L2. The public code was only on L1. So you could in theory jam just L1 to block the un-encrypted portion, but why would you?
In recent years GPS modernization means satellites have been using new codes on L2 (L2C) which are un-encrypted. Only about 18 of the satellites carry that capability at this time.
"... Iranian engineer's assertion that the drone was captured by jamming both satellite and land-originated control signals to the UAV, followed up by a GPS spoofing attack that fed the UAV false GPS data to make it land in Iran ..."
Wikipedia has more of the story https://en.wikipedia.org/wiki/Iran%E2%80%93U.S._RQ-170_incid...
That was disputed "... GPS is not the primary navigation sensor for the RQ-170..."
Anyway, thanks!