When choosing low‑altitude surveillance radar, many buyers first check the maximum detection range. However, limit range figures without preconditions are of limited reference value and may lead to unsatisfactory project acceptance.
1. Check the RCS prerequisite for detection range
Detection range varies greatly for targets with different RCS (Radar Cross‑Section). A 5 km detection range for large‑RCS targets such as vehicles or helicopters does not mean the same performance for mini‑UAVs.
Key verification point: effective detection range against small UAVs with RCS = 0.01 m², the core metric for counter‑UAV capability assessment.
2. Frequently‑overlooked key specifications
Minimum detection blind range: A larger blind zone raises risks of missing UAVs making close‑range incursions. Evaluate potential security gaps according to site deployment positions.
Target speed measurement range: The radar needs to capture high‑speed FPV drones, while the lower speed limit matters greatly. Hovering or slow‑flying UAVs are easily lost if the minimum detectable speed is too high.
Scan Rate: Determines track update frequency, which affects tracking performance for highly maneuverable targets and response speed for optronic sensor hand‑over.
Elevation coverage angle: Defines detectable altitude. Prefer 3D radars that output altitude data to reduce false alarms.
Maximum number of simultaneously tracked targets: Critical for multi‑UAV or swarm scenarios to prevent target loss.
3. Environmental adaptability & integration capability
Verify the unit’s operating temperature and IP protection rating. Distinguish operating temperature from storage temperature to match field outdoor conditions. Field testing is recommended for sites with heavy ground clutter. Note that zero‑false‑alarm radar does not exist in practical industry applications; specifications alone cannot fully represent on‑site performance.
Confirm open protocol support and standard Ethernet track output for seamless integration with optronic devices and command‑and‑control platforms, lowering system integration costs.
Conclusion
Do not evaluate counter‑UAV radar solely based on its limit detection range. Use performance for RCS = 0.01 m² small targets as the baseline. Comprehensively assess blind range, speed span, scan rate, environmental adaptability and integration compatibility. Conduct field tests whenever possible to select suitable equipment for your project.