Retained for transparency, but blocked from execution because the catalog physics review rejected it.
Intended capability
Document why this proposed outcome is blocked by the reviewed physics: Detection of small drones hovering outside upper-floor windows — the reconnaissance and voyeurism vector no residential alarm covers — from the same indoor mesh, through the glass.
This describes the intended outcome. Readiness is physics limit, evidence is class C, and a catalog mapping or recording is not proof of this outcome at a real site.
Solution blueprint
See the environment before installing it.
This exact kit is one of 191 first-class designs. It includes geometry, objects, nodes, wording, scenarios, installation, limitations, and catalog-bound readiness.
No rendered revision is available yet.
Bundled recording
A related Home scene
This is one recorded vertical scenario. It is not separate validation of every capability in the catalog.
01 The physics
A hovering quadrotor presents two observables: rotor blades produce periodic 'blade flash' modulation that aliases into the measurable 10-40 Hz Doppler band as a comb-like spectral signature unlike any biological mover, and the plastic-and-battery airframe adds a small persistent scatterer at window height where the RTI prior says nothing should float. Glass is nearly RF-transparent at 2.4/5 GHz.
02 Shared processing path
Micro-Doppler comb detection in the 10-40 Hz band (stage 2) -> spectral periodicity template vs human/pet/fan manifolds (stage 3) -> RTI localization to the window exterior at floor height >1 (stage 4) to reject indoor fans and street traffic.
This is a capability design path. Components may be shared with other catalog entries; it is not presented as a unique algorithm.
03 Validation plan
Rejected on the WiFi physics: a small quadrotor 1-5 m outside sits below the indoor-link noise floor and its rotor rates alias at commodity CSI frame rates — a verdict about the WiFi mesh, and it stands. An aimed 24 GHz radar cone at the window is untested by that verdict: a class-C bench experiment (radar at the glass, hover vs confounder trials, coated and uncoated panes, report AUC and standoff) could one day reopen the question. It is an experiment, never a shipped promise.
04 Commercial hypothesis
"Anti-drone privacy protection for the bedroom window, from the WiFi you already own." For luxury home security and celebrity/executive residence packages.