The Technological Progression of Counter-Unmanned Aerial Vehicle (C-UAV) Systems

1.1 Advancements in Detection Technologies 

Spurred by the swift evolution of core technologies including radar, optical imaging, advanced manufacturing, and signal processing, C-UAV detection technology has transitioned from a rudimentary, inefficient approach to a sophisticated, multi-faceted integrated system. This transformation has markedly enhanced drone detection rates, minimized tracking inaccuracies, and facilitated seamless operation across diverse and complex environments. Figure 2 depicts the dynamic enhancement in detection probability for the three primary methods—radar, electro-optical/optoelectronic, and radar-electro-optical fusion—alongside the gradual optimization of tracking errors for radar, electro-optical, radar-electro-optical fusion, and passive detection techniques.

In terms of detection performance: Traditional radar detection rates have incrementally improved from 40% to 55%, proving adequate for medium to long-range detection even under challenging weather conditions. Electro-optical (EO) detection, leveraging advancements in imaging technology, has seen its detection rate climb from 10% to 15%, rendering it optimal for close-range, high-precision target identification. Radar-EO fusion detection merges the advantages of both methods, surpassing any single detection approach. Passive detection, through continuous refinement, has boosted its detection rate from 50% to 75%, effectively addressing the critical issue of active detection methods exposing the system's own location.

Regarding the tracking of "Low, Slow, and Small" (LSS) drones: Radar-EO fusion technology achieves a tracking error of just 5 meters, significantly outperforming traditional radar (25 meters) and EO detection (45 meters), meeting the stringent requirements for precise tracking of small drones. Passive detection technology, enhanced with sophisticated signal analysis algorithms, has reduced its tracking error from 50 meters to 35 meters, bolstering reliability in complex operational settings.

1.2 Innovations in Countermeasure Technologies

C-UAV countermeasures have evolved from basic jamming techniques to multi-dimensional disruption capabilities. Initially, countermeasures primarily focused on communication and navigation jamming: specialized jammers emitted targeted electromagnetic signals to disrupt communication links between ground control stations, satellites, and drones, leading to flight disturbances or crashes. However, the efficacy of these early technologies was constrained, with communication jamming achieving an interception rate of only 30%, and navigation jamming just 20%.

As C-UAV requirements have continued to evolve, more potent countermeasures have emerged: communication/navigation jamming & deception, high-power microwave (HPM) damage, integrated communication/navigation jamming, and high-energy laser (HEL) damage. Among these, communication/navigation jamming & deception boasts the highest interception rate, reaching up to 75%, followed by HPM (70%), integrated communication/navigation jamming (65%), and HEL damage (50%). These solutions can be flexibly deployed across various scenarios to counteract all types of drones.

1.3 Development in Control/Platform Technologies

Control and platform technologies constitute the foundation of C-UAV systems and are pivotal for achieving precise detection and effective interception. Initially, C-UAV equipment relied solely on manual operation: operators visually tracked and engaged targets, resulting in high labor intensity, low accuracy, and inadequate efficiency, making it ill-suited for large-scale, multi-target scenarios. Progress in precision manufacturing, electronic control automation, and collaborative networking technologies has enabled semi-autonomous and unattended operations, as well as the integrated networking of C-UAV equipment across regions, types, and functions. This has reduced labor costs, minimized human error, and significantly enhanced accuracy and efficiency, driving the intelligent transformation of C-UAV operations.

Simultaneously, C-UAV platforms have evolved from simple portable models to a diverse array of configurations: vehicle-mounted fixed, distributed fixed, vehicle-mounted mobile, and distributed mobile. These platforms can be flexibly adapted to various deployment scenarios, such as land-based sites, parks, and airports, thereby greatly expanding the application scope and combat effectiveness of C-UAV equipment.

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