Covert silent anti-drone sound tracking sensor delivering long-distance detection capability: multi-rotor drones ≥500m, fixed-wing UAVs ≥2000m. Supports multi-array cascading, 3 arrays cover full 360° with max 48 simultaneous drone targets, 12 arrays expand capacity to track up to 192 UAVs. Centimeter-level positioning accuracy fills radar low-altitude blind zones, 100ms ultra-fast response, all-weather 24-hour monitoring for airport, military, urban low-altitude governance and industrial perimeter protection.
Passive sound source localization hardware
Unlike active radar devices that emit electromagnetic waves, our MEMS acoustic counter-UAS system adopts full passive sensing architecture, which only receives external sound signals without any signal radiation, achieving ultra-high concealment for military and sensitive area deployment.
The multi-arm spiral 64-channel microphone array collects wideband acoustic signals ranging from 20Hz to 80kHz, capturing unique vibration harmonic features generated by drone rotors and drive motors. After synchronous 192kHz sampling by the acquisition board, optimized Delay-Sum and MVDR beamforming algorithms cooperate with self-developed anti-reverberation AI models to eliminate urban building reflection noise, output real-time 3D spatial coordinates of UAV targets, and overlay positioning markers synchronously on 1080P camera video streams for visual early warning.
3 sets LS8118F form closed-loop 360° perimeter defense, support up to 48 drone targets, fit factory, venue and small camp.
12 units cascaded for ultra-large airspace full coverage, maximum 192 simultaneous UAV tracking for airport & border defense.
Deployment logic: More cascaded arrays expand monitoring range and multiply real-time multi-target tracking capacity.
No electromagnetic signal transmission, hard to be detected by drone radio reconnaissance equipment, suitable for military silent countermeasure missions.
64-channel synchronous sampling, expandable to 192 channels for larger aperture array, significantly improves spatial resolution of distant small drones.
Trained massive drone sound dataset, distinguish multi-rotor, FPV racing, fixed-wing UAVs, filter vehicle, crowd environmental noise to lower false alarm rate below 10%.
The integrated acoustic localization kit includes three core modules: multi-arm spiral MEMS microphone array, IMX298 HD USB camera, multi-interface synchronous acquisition board, supporting dual USB/Gigabit UDP high-speed data transmission for audio-video synchronous acquisition.
| Module Name | Core Specification Parameters |
|---|---|
| MEMS Microphone Array | 64-channel Infineon IM72D128V01, 460×460×20mm spiral layout, SNR 72dB, sensitivity -36dBfs, frequency band 20Hz-80kHz, SPL collection range 30~120dB |
| HD USB Camera | IMX298 image sensor, 1080P@30fps real-time video output, synchronous overlay of drone positioning coordinates on video screen |
| Synchronous Acquisition Board | USB/Gigabit Ethernet UDP/Serial triple interfaces, 192kHz sampling rate, 16bit PCM audio, full-channel synchronous sampling design |
| Overall Physical Index | Total weight under 3.5kg, fanless operation -40℃~70℃ working temperature, power consumption less than 2.5W, DC5V/USB2.0 power supply |
Single Array Multi-Rotor Drone Detection Distance
Single Array Fixed-Wing UAV Detection Distance
3 Arrays 360° Max Simultaneous Tracking
12 Arrays 360° Max Simultaneous Tracking
Max 48 Drones
Max 192 Drones
Performance rule: Target tracking quantity increases proportionally with the number of cascaded LS8118F acoustic arrays, matching different site defense scales.
| Performance Item | Technical Standard |
|---|---|
| Omnidirectional Monitoring Range | 360° azimuth, -20°~90° elevation angle, full low-altitude coverage without blind area |
| AI Recognition Performance | UAV recognition rate >90%, false alarm rate <10% under complex urban noise |
| Positioning Response Latency | 100ms ultra-fast real-time coordinate output for sudden drone intrusion warning |
| Built-in Localization Algorithm | Optimized Delay-Sum + MVDR broadband beamforming, anti-multipath reverberation processing |
| Collaborative Positioning Precision | ±3° single array azimuth precision; multi-array linkage achieves meter-level distance error |
Traditional counter-UAS equipment has obvious inherent defects in complex urban, border and battlefield environments. Our passive acoustic sensor perfectly complements radar, photoelectric and GPS monitoring systems to build a complete layered low-altitude defense network.
| Detection Solution | Positioning Precision | Long-Range Detection Ability | Concealment & Electromagnetic Resistance | Multi-Target Tracking Upper Limit |
|---|---|---|---|---|
| MEMS Acoustic Localization Array | Centimeter-level collaborative positioning | Multi-rotor ≥500m, Fixed-wing ≥2000m | Passive silent sensing, strong EMC anti-interference for battlefield | Up to 192 targets via 12-array networking |
| Active Radar System | Meter-level distance error | Weak detection for tiny FPV drones | Active electromagnetic emission, easy to be interfered and detected | Limited target capacity with high clutter false alarms |
| Optical Vision Tracking Camera | Affected by light occlusion, angle deviation error | Short visual range blocked by buildings/fog | Passive observation, no electromagnetic interference | Only track visible drones within line of sight |
| Drone GPS Positioning Monitoring | Meter-level positioning deviation | Totally invalid for GPS-off black flight drones | Depend on drone satellite signal, cannot monitor silent signal-off UAVs | No tracking capability against radio-silent drones |
Deploy 12-array networking around airport runways to reach 2000m fixed-wing detection range, track up to 192 drones simultaneously, prevent civil aviation collision risks and black flight intrusion.
3-array 360° silent perimeter deployment supporting 48 concurrent hostile FPV tracking, passive non-emission design will not expose defense deployment locations.
Built-in anti-multipath urban positioning algorithm, stable capture multi-rotor drones within 500m downtown airspace, supervise illegal aerial shooting and large-event airspace safety.
Detect long-range fixed-wing rescue UAVs over 2000 meters through smoke barriers, lock abnormal flying drones in fire zones for command scheduling.
3-array circular layout for factory perimeter 360° coverage, real-time warning against unauthorized multi-rotor drone intrusion within 500m detection radius.
12 arrays cascaded linear deployment for border lines, realize 2km+ fixed-wing drone long-distance early warning and 192-target full airspace monitoring.
Single LS8118F acoustic array delivers ≥500m multi-rotor and ≥2000m fixed-wing detection distance. For full 360° seamless airspace supervision, multiple microphone arrays can be networked via Gigabit UDP synchronous transmission to realize collaborative three-dimensional positioning with massive multi-target tracking capability.
We provide full open development materials for system integrators, research institutes and security equipment manufacturers to realize customized secondary integration of acoustic drone localization equipment, including multi-array linkage data protocol for 48/192 target simultaneous tracking.
A1: Single LS8118F array effective detection distance: multi-rotor drones ≥500 meters; fixed-wing UAVs with large propellers and engines can be stably captured at distances over 2000 meters.
A2: Three linked acoustic arrays form full 360° coverage and support up to 48 simultaneous drone targets; expanding to a 12-array network realizes ultra-large airspace monitoring with maximum 192 concurrent UAV tracking capacity.
A3: Fully passive sensing mode without any signal transmitting. It can be deployed covertly in military and confidential sites, will not generate electromagnetic radiation to expose monitoring positions, and avoids signal interference problems of active radar equipment.
A4: Yes, acoustic positioning relies on sound wave transmission instead of light or electromagnetic wave. It runs stably 24/7 all year round, unaffected by night, fog, rain, snow and light intensity, supporting fanless operation at -40℃~70℃.
A5: Absolutely. We provide standard UDP multi-array synchronous data interface and complete open API, supporting seamless docking with radar, photoelectric tracking, command and control platforms to build multi-sensor fusion low-altitude defense system with 48/192 multi-target tracking.
Get detailed technical parameters, 3/12 array networking deployment cases and secondary development documents for passive UAV acoustic localization anti-drone system with long-range fixed-wing detection and massive multi-target tracking
Email: sales@otomosemi.com
WhatsApp: +86 18123677761
