A Hokkaido-based company has presented a stratospheric aerostat system with emerging defense uses at the annual “Technology Symposium 2025,” hosted by Japan’s Acquisition, Technology & Logistics Agency (ATLA) in Tokyo on November 11–12. In this context, aerostat refers to a high-altitude platform kept aloft by lighter-than-air gas, capable of long-duration observation, communications support, or scientific […]