docs(adr): ADR-091 stand-off radar tier research [proposed]
Research-only ADR exploring stand-off radar tiers above 60 GHz: 77-81 GHz
high-power and 100-200 GHz coherent sub-THz. Triggered by Ghost Murmur spec
(doc 16) §6.3 explicitly deferring military-class radar as out of scope.
Decision matrix:
- Skip permanently: 77 GHz beyond §95.M ceiling, 220 GHz coherent stand-off
hardware, 380+ GHz imaging.
- Research only (simulator-class artifact, mirroring nvsim ADR-089/090):
77 GHz at §95.M ceiling, 100 GHz coherent mesh, 140 GHz coherent stand-off.
- Build now: nothing.
If RuView ever builds anything in this space, it builds a sub-THz forward
simulator (subthz-radar-sim) following the nvsim pattern: deterministic,
host-side, witness-verified, no firmware. Conditional triggers gate any
build: sub-\$1k COTS sub-THz transceiver AND clear medical/non-export-
controlled application AND RuView core RFC sign-off.
Grounded in primary sources: Massagram 2013 (24 GHz HR @ 21 m), imec 2019
(140 GHz CMOS demonstrator), ITU-R P.676 (atmospheric attenuation),
47 CFR Part 95 Subpart M (76-81 GHz EIRP caps), BIS ECCN 6A008 (radar
export control).
Co-Authored-By: claude-flow <ruv@ruv.net>
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