Unique technology: instead of microphone arrays, acoustic particle-velocity sensors (the 'Microflown' probe) directly measure the air-particle motion of a sound wave. Established Dutch military partnership; used for shot-ranging and UAV detection. SkySentry reportedly detects 2 kg fixed-wing drones at 1 km, manned helicopters at 10 km. Vehicle integrations.
| Country | Netherlands |
|---|---|
| Subcategory | Passive acoustic |
| Price | Quote-based · high-end · no public pricing |
| Subtype | Acoustic sensor |
| Form factor | Vehicle / tripod |
| SWaP | Low SWaP; one post deployed by one person <10 min |
| Sensor modality | Acoustic particle velocity |
| Type | Particle velocity |
| Notable partners | Dutch Armed Forces-funded programs (Acoustic Pointer, SKYSENTRY, ACHOFILO); distributor Equipnor (Norway); sold via MSS Defence |
| Mounting | Fixed/mast, Tripod/portable, Vehicle, Airborne |
| Coverage | Hemispherical |
| Output data | Bearing/AoA, Classification |
| Array config | CASTLE acoustic vector sensor nodes; networked bubble when arrayed |
| Active/Passive | Passive |
| Frequency range | Entire audio spectrum (broadband) |
| Localisation mode | Bearing + elevation |
| Detection range (km) | 1 |
| Detection range (km) | 1 |
| Integration interfaces | Standalone or multi-sensor C-UAS; bearing/elevation cueing |
| All-weather / day-night | All-weather, day & night |
| Signature library / classification | Classifies wideband (multicopters, jets) and tonal (props, helos) via DoA across frequency bins |