In the ever-evolving realm of space security, nations are increasingly investing in technologies to safeguard their satellite infrastructure. The United States, for instance, has been at the forefront of developing systems to detect and neutralize potential threats to its orbital assets. A notable initiative is the Hypersonic and Ballistic Tracking Space Sensor (HBTSS), a satellite-based sensor system being developed by the Missile Defense Agency (MDA) along with the Glide Phase Interceptor (GPI) to address hypersonic threats. The HBTSS is designed to provide quality intercept data to the GPI, equipped with "birth-to-death" capability, allowing it to track potential threats from their launch until interception. This system is set to be integrated into the broader set of satellite constellations being developed by the Space Development Agency (SDA), enhancing the United States' ability to monitor and respond to missile threats in real-time. en.wikipedia.org
Internationally, collaborations are strengthening satellite defense capabilities. In June 2025, Finland's government agency, Business Finland, allocated €41.1 million in research and development funding to ICEYE, a Finnish satellite and defense technology firm. ICEYE operates the largest Synthetic Aperture Radar satellite fleet, offering near real-time imaging services to clients such as Ukraine, NATO, and Japan. This funding is part of ICEYE’s broader €250 million investment program aimed at boosting its position as a world leader in space and defense technology. The support aligns with the EU's €800 billion initiative to strengthen defense, emphasizing the role of tech startups in addressing heightened global security needs. ICEYE’s technology enables 24/7 Earth monitoring under all weather and lighting conditions, with increasing global demand for sovereign satellite capabilities. reuters.com