Comment on The Quiet Numbers Station: Decoding Nineteen Years of GPS CryptographyparentComments−053mohas access to a separate, encrypted, higher-precision GPS signal.That's not it, though. This is available on the consumer L1 band, and you can even read that info using a $5 Ublox receiver (UBX-RXM-SFRBX command).−kotaKat3moYeah, but the DAGRs out there hop around on both sets. You can run a DAGR without keys and it'll use civ GPS just fine. It'd make sense to have the hidden OTAR/OTAP running on a hidden chunk of L1 traffic.https://www.baesystems.com/en/product/defense-advanced-gps-r...
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That's not it, though. This is available on the consumer L1 band, and you can even read that info using a $5 Ublox receiver (UBX-RXM-SFRBX command).
Yeah, but the DAGRs out there hop around on both sets. You can run a DAGR without keys and it'll use civ GPS just fine. It'd make sense to have the hidden OTAR/OTAP running on a hidden chunk of L1 traffic.
https://www.baesystems.com/en/product/defense-advanced-gps-r...