A400 Series Radar

The A400 Series is a family of non-rotating, electronically scanned (e-scan) FMCW Doppler radars built specifically for near-ground airspace security. Operating in the Ku band (15.7–17.2 GHz), each unit uses passive electronically scanned array (PESA) technology to sweep a 90°, 180°, or 360° sector without mechanical movement, eliminating the wear and vibration that limit rotating systems in high-tempo operations.

The A400 is engineered for the full drone threat spectrum: it can resolve a nano-quadcopter with a radar cross-section of 0.01 m² at 2.7 km and a larger fixed-wing UAS (RCS 1.0 m²) beyond 8.6 km. Drone Spotlighting Mode tightens the scan to a 0.25-second revisit rate for cued precision tracking, allowing cueing of effectors or EO/IR payloads. A continuous false alarm rate of fewer than one per day and a minimum detectable radial velocity of 0.37 km/h give operators clean, actionable tracks rather than clutter-saturated displays.

At 25 kg for the main unit and 100 W average power draw from a 12–28 V DC supply, the A400 suits both fixed infrastructure and vehicle-mounted or rapidly deployable configurations. IP66 housing and an operating range of −32 °C to +60 °C make it viable in desert climates where sand loading, humidity spikes, and temperature extremes degrade rotating-antenna alternatives. The radar's MTBF exceeds 65,000 hours — practically zero scheduled maintenance over a five-year service cycle.

Typical deployment contexts include airport perimeter C-UAS layers, critical national infrastructure (energy facilities, government compounds), and military base protection. The A400 is ITAR-free, which simplifies export licensing to GCC buyers procuring outside US-origin supply chains.