Mapped to a shared offline runtime family and usable with a recording or compatible ESP32 CSI stream.
Intended capability
Pilot this intended outcome through the shared Breathing rate family, then validate it against site-specific ground truth: Detects respiration of a living person in inaccessible void spaces — collapsed-structure rubble, shipping containers, attics, crawlspaces — using mesh nodes placed around the void.
This describes the intended outcome. Readiness is shared-family mapped, evidence is class B, 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 Frontier scene
This is one recorded vertical scenario. It is not separate validation of every capability in the catalog.
01 The physics
Breathing (0.1-0.5 Hz) cyclically displaces the thorax by ~mm, phase-modulating any multipath component that penetrates to the person — a signature no static debris can produce. NLOS penetration at 2.4 GHz through rubble/container walls is attenuating but nonzero; the periodicity, not SNR, carries the detection. Through-wall LOS/NLOS discrimination (AUC 0.69) and breathing-band extraction are already in the proven stack.
02 Shared processing path
Stage 2 micro-Doppler with long coherent integration extracts 0.1-0.5 Hz spectral lines -> Stage 3 z-scored anomaly manifold enables cross-scene transfer (no site baseline exists at a disaster) -> Stage 1 tap association + Stage 4 RTI with multiple node placements coarsely localizes which void sector the modulation originates from -> machine-vs-human discriminator rejects generators/pumps.
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
OPERAnet/EHUNAM respiration traces for the breathing extractor; own-hardware: volunteer inside a rubble mockup (concrete slabs/CMU pile) and inside a closed steel container, ROC vs depth and vs diesel-generator interference.
04 Commercial hypothesis
'A $100 throwable mesh that finds the living' — breathing-based life detection for USAR teams, border/anti-trafficking container checks, and firefighter accountability in zero-visibility structures.