Japan’s Acquisition, Technology & Logistics Agency (ATLA) unveiled several advanced defence technologies at this year’s DSEI Japan exhibition, held from 21 to 23 May in Chiba. Among the centrepieces was a mobile laser-based counter-unmanned aerial system (C-UAS) currently under development in collaboration with Mitsubishi Heavy Industries (MHI).
An ATLA official confirmed that a prototype of the mobile laser system is undergoing field trials with the Japan Ground Self-Defense Force (JGSDF). The system has been developed specifically to address the growing threat posed by small hostile unmanned aerial vehicles (UAVs), which continue to proliferate in modern conflict zones.
The weapon system features a 10 kilowatt laser mounted on an 8×8 military truck platform. A turret housing the laser is installed on top of the vehicle, allowing for high-angle targeting capability. According to the official, the laser is intended to disable or destroy UAVs through direct energy engagement, although specific performance details—such as effective range—were not disclosed.
The system incorporates radar to enable all-round aerial surveillance. Once a threat is identified, a beam director mounted on the vehicle’s roof initiates target tracking. Upon confirmation, the operator engages the laser to neutralise the UAV. The integration of radar and beam control aims to provide a seamless detection-to-engagement chain, enabling rapid response against fast-moving aerial threats.
ATLA stated that the JGSDF is expected to complete prototype testing by March 2026, with operational deployment timelines likely to follow pending successful evaluations.
The increasing use of UAVs in reconnaissance, surveillance, and even combat roles by state and non-state actors has spurred many countries, including Japan, to pursue directed-energy weapons. Such systems promise low cost per shot, reduced collateral damage, and potentially unlimited ammunition—as long as sufficient power is available.
In addition to the mobile laser system, ATLA also showcased a range of other emerging technologies. Prominently displayed was a 1:2 scale model of a naval electromagnetic railgun, another high-profile development project in Japan’s defence modernisation drive. The railgun is envisioned as a future naval weapon capable of launching projectiles at hypersonic speeds using electromagnetic force rather than conventional explosives.
Alongside the railgun model was an updated version of the Type-12 Surface-to-Surface Missile (SSM), which features improved range and targeting capabilities. The upgraded system is intended to bolster Japan’s anti-ship and coastal defence posture, particularly in contested maritime zones.
Also featured at the ATLA booth was a conceptual model of a new unmanned surface vessel (USV) designed for combat roles. The USV project highlights Japan’s growing interest in autonomous systems for naval operations, including surveillance, reconnaissance, and potentially offensive missions.
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