Built for silent airspace defense, the LS8118F listens instead of radiating: a 64-channel MEMS microphone array feeds a 192 kHz synchronous acquisition board, and AI acoustic fingerprint recognition separates multi-rotor, FPV, and fixed-wing UAVs from everyday urban noise. OTOMO supports each deployment from prototype to fleet with PCBA solutions that cover board design, assembly, and volume production, including a custom acoustic array PCBA service for teams adapting the array layout to their own site.
A passive acoustic localization system for low-altitude airspace monitoring.
The system only receives external sound signals and emits no signal radiation, which keeps it hard to detect by drone radio reconnaissance equipment and suitable for military silent countermeasure missions.
Hardware, performance, and tracking figures published for the LS8118F.
| Item | Specification |
|---|---|
| Microphone array | 64-channel MEMS microphone array, expandable to 192 channels; Infineon IM72D128V01 elements |
| Array layout | 460 × 460 × 20 mm multi-arm spiral configuration |
| Acoustic performance | SNR 72 dB; sensitivity -36 dBfs; frequency band 20 Hz–80 kHz; SPL collection range 30–120 dB |
| Acquisition board | USB, Gigabit Ethernet UDP, and serial interfaces; 192 kHz sampling; 16-bit PCM; full-channel synchronous sampling |
| Camera module | IMX298 image sensor, 1080P@30fps real-time video with synchronized drone coordinate overlay |
| Detection distance | ≥500 m for multi-rotor drones and ≥2000 m for fixed-wing UAVs with a single array |
| Monitoring coverage | 360° azimuth and -20°–90° elevation angle, full low-altitude coverage without blind area |
| Positioning performance | 100 ms positioning response latency; ±3° single-array azimuth precision; meter-level distance error with multi-array linkage |
| Tracking capacity | Up to 48 targets with 3 arrays in a circular layout; up to 192 simultaneous UAVs with 12 cascaded arrays |
| Physical index | Under 3.5 kg total weight; fanless operation; -40℃–70℃ working temperature; under 2.5 W power consumption; DC 5V / USB 2.0 supply |
Two published layouts scale the same array hardware from a compact site perimeter to wide-area airspace coverage.
Three LS8118F units form a closed-loop 360° perimeter defense tracking up to 48 drone targets, suited to factories, venues, and small camps.
Twelve cascaded units cover ultra-large airspace and track up to 192 simultaneous UAVs, a configuration intended for airport and border defense.
Airport monitoring, military installations, urban low-altitude governance, and industrial perimeter protection, with 24-hour all-weather operation.
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View productit is a passive acoustic detection system built around a 64-channel mems microphone array, an hd usb camera, and a synchronous acquisition board that outputs real-time 3d coordinates for uav targets.
published figures list a detection distance of at least 500 m for multi-rotor drones and at least 2000 m for fixed-wing uavs with a single array.
three arrays in a circular layout track up to 48 targets with 360° perimeter coverage, while 12 cascaded arrays track up to 192 simultaneous uavs.
the board offers usb, gigabit ethernet udp, and serial interfaces with 192 khz sampling and 16-bit pcm full-channel synchronous acquisition.
the array is fanless, weighs under 3.5 kg, operates from -40℃ to 70℃, and draws less than 2.5 w from a dc 5v / usb 2.0 supply.
contact the otomo team with your deployment site, coverage goals, and any specifications you need reviewed; a technical datasheet and demo program are available on request.
