In the realm of maritime defence, the battle against Unmanned Aerial Vehicles (UAVs) or drones is a complex and evolving challenge. This article, authored by Mr. Hasan Özyurt, delves into the critical aspect of anti-drone warfare at sea, focusing on the intricate dance between sensors and effectors. The author's expertise and insights provide a comprehensive analysis, offering a unique perspective on this emerging domain.
The core idea here is that effective anti-drone warfare requires a meticulous approach, where every link in the kill chain is tailored to the specific physics and economics of the Tier 2 OWA drone threat. This is not merely about selecting the best individual component but rather assembling a coherent system that can detect, identify, track, and engage these drones within a compressed time window. The author emphasizes that failure at any link results in a 'leaker', which can be catastrophic against critical assets like ports, energy installations, or anchored ships.
One of the key challenges highlighted is detection. The author argues that the detection problem is compounded by the radar cross-section (RCS) of Tier 2 OWA drones, which can be as low as 0.1 m², making them virtually invisible to legacy air search radars. The solution, according to the author, lies in compact Active Electronically Scanned Array (AESA) radar systems, designed specifically for counter-UAS missions. These systems can detect and track targets with an RCS as low as 0.01 m² within the size, weight, and power (SWaP) constraints of small-to-medium Unmanned Surface Vessels (USVs).
The discussion then shifts to identification and fire control, where the Electro-Optic System (EOS) plays a pivotal role. The author stresses the need for a multi-spectral EOS architecture, combining daylight, thermal, and SWIR channels, to ensure positive identification of targets at ranges of 5-10 km under various maritime conditions. This is crucial for maintaining reliability and accuracy in the face of sea-state-induced motion and changing environmental factors.
The author's commentary on the effector landscape is particularly insightful. They analyze various effector classes, from advanced surface-to-air missiles to guns, electronic warfare, and directed energy weapons. Each option is evaluated based on its cost-exchange ratio, counter-swarm capability, and technological readiness. The author concludes that precision-guided light missiles, specifically Semi-Active Laser (SAL) and IR/IIR categories, offer the most sustainable and effective solution for small unmanned platforms.
The optimal effector choice, according to the author, is a combination of SAL and IR/IIR light missiles on a common launcher. This pairing addresses the tactical gaps of individual systems, providing precision hit-to-kill engagement and true fire-and-forget autonomy. The author's interpretation of the kill chain analysis leads to three firm conclusions: the necessity of compact AESA radar for detection, the importance of a multi-spectral EOS for identification and fire control, and the current hard-kill answer being the combined SAL and IR/IIR light missile pair.
In my opinion, this article provides a comprehensive and thought-provoking analysis of anti-drone warfare at sea. The author's expertise and personal insights add depth to the discussion, making it a valuable read for anyone interested in the intersection of maritime defence and emerging technologies. The commentary on the challenges and solutions presented here is particularly engaging and thought-provoking, offering a fresh perspective on a critical aspect of modern warfare.
