Views: 0 Author: Site Editor Publish Time: 2026-09-30 Origin: Site
Intruding low-flying UAS are no longer a marginal risk for critical infrastructure. Conventional sensors often miss small drones at low altitude, and poor visibility can turn radar or optical coverage into a patchwork of blind spots. RIBRI answers that gap with Heimdall, a passive acoustic C-UAS sensing solution built to listen first and alert fast.
Part of the RIBRI Hearing product line, Heimdall detects unauthorised drones by capturing their distinctive acoustic signatures rather than relying solely on radar, RF, or visual tracking. Because it "hears" the target, it performs in conditions that routinely defeat other sensors—darkness, fog, and rain—while keeping the false-alarm burden low. By adding an acoustic layer to a multi-sensor security stack, Heimdall gives operators a clearer, earlier picture of airborne threats.
Key capabilities
Passive acoustic sensing — Detects low-flying UAS by their rotor and motor sound signatures, requiring no active emissions that could be detected or jammed.
24/7 all-weather operation — Fully functional in darkness, fog, and rain where optical and radar systems often struggle.
Detect, classify, and locate — Identifies unauthorised drones and provides positional awareness so security teams can act before the threat reaches sensitive assets.
Reduced false alarms — Acoustic discrimination helps cut nuisance alerts caused by birds, clutter, or weather, freeing operators to focus on real incidents.
Critical infrastructure ready — Designed to protect power plants, refineries, data centers, transport hubs, and other high-value sites against airborne intrusion.
Where it fits
Critical Infrastructure — Perimeter and asset protection for power, energy, telecom, and data facilities where low-altitude drone incursions are hard to spot.
Low-Altitude Security — Fills the coverage gap below the radar horizon, where small UAS are most likely to operate.
Public Safety — Supports event security and urban protection teams with early warning of unauthorised drones in restricted airspace.
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