The one signature a drone cannot switch off.

Passive acoustic detection, bearing and ranging of small drones on commodity edge hardware — targeting the low-slow-small threats radar and RF miss.

PassiveAcoustic detection

MultiDrone · in testing

EdgeOn-device

0Cloud dependency

ACOUSTIC BEARING SCOPE

Hear what radar can't see.

One 4-mic array resolving multiple drones — bearing from rotor acoustics alone. No emissions, no line of sight.

WHY ACOUSTIC

Three sensing modalities, three blind spots — sound closes them.

Passive · reveals no position Deaf to RF posture Targets radar's blind spot · low-slow-small Distributable · cheap nodes, not one big sensor Day, night, poor visibility Built to cue a precise effector

CAPABILITIES

Detect, direct, range — on the device itself.

VALIDATED · DEPLOYED

Detection

Physics-informed acoustic classifier — validated detection accuracy, in a one-click offline app.

BUILT · IN TESTING

Direction & multi-drone

Bearing from inter-mic timing — deterministic physics, no training data. Resolves multiple drones, lab & field.

DESIGNED

Distance

Range from level and spectral cues, to calibrate on real near/far recordings — real data only.

HARDWARE ARCHITECTURE

One sensor rig, one edge node — nothing leaves the device.

Stage	Component	Detail
Sensor rig	Compact 4-mic array	Multichannel capture · 48 kHz
Edge compute	Commodity edge module	All detection & bearing on-device — no cloud round-trip
Output	Operator alert	Live alert · bearing (azimuth) · range estimate

Commodity componentsOff-the-shelf edge boardLow-cost custom arrayScales with budget, not a single point of failure

REQUEST BRIEFING

Hear it work against a real drone.

We demonstrate detection live off the edge hardware, walk the bearing solver and multi-drone results, and lay out the staged path to validated direction and distance.

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