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April 21, 2026 | JCN NewswireEstimated reading time: 2 minutes
BULL Co., Ltd., a company developing space debris mitigation devices, and Fujitsu Limited announced that they have signed a Memorandum of Understanding (MOU) to explore the development of a high-precision Space Situational Awareness (SSA) service unique to Japan. This service aims to monitor space debris in Earth's orbit, contributing to safe and sustainable space activities. Through the development of this SSA service, both companies will contribute to the realization of Space Traffic Management (STM), which manages artificial satellites from launch to disposal, and aim to establish it as a de facto standard.
Background
In recent years, the rapid expansion of satellite constellations, enabled by the decreasing cost and miniaturization of artificial satellites, has facilitated continuous and high-frequency Earth observation possible by launching multiple satellites into the same orbit. This trend, however, has concurrently escalated the serious risk of collisions between objects, including space debris, due to the increasing congestion of orbital environments. Consequently, establishing high-precision SSA and the subsequent implementation of STM has become an urgent imperative, particularly for national security.
BULL is dedicated to developing “HORN,” a Post Mission Disposal (PMD) device designed to be deployed to prevent rockets and artificial satellites from becoming space debris when deployed. The company also develops technology for acquiring data from rockets, artificial satellites, and their surroundings, thereby promoting practical contributions to space sustainability. Fujitsu, since the 1960s, has been actively involved in the research and development, and social implementation of large-scale data processing platforms and high-precision orbital analysis technologies for space debris and other orbital phenomena. This collaboration between BULL and Fujitsu was initiated through Fujitsu Accelerator, Fujitsu's partner co-creation program aimed at fostering innovation.
Overview of the Collaboration
Both companies will jointly explore a comprehensive service and business model for Japan’s unique private-sector SSA service, encompassing the entire process from artificial satellite orbital data acquisition to operational support. Specifically, BULL will focus on building models for high-precision orbital analysis leveraging data obtained from HORN, while Fujitsu will explore the development of a platform for orbital and conjunction analysis compatible with HORN.
Through the development of these services, both BULL and Fujitsu aim to realize effective Space Traffic Management and thereby contribute to the development of safe, secure, and sustainable space activities.
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