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About

Takuji Ebinuma is a researcher specializing in indoor positioning systems, mobile robot navigation, and GPS-compatible localization technologies. His work addresses one of the most persistent challenges in robotics and navigation: achieving precise, reliable positioning in indoor environments where traditional GPS signals are unavailable or unreliable. Ebinuma's most significant contributions center on the development and refinement of the Indoor Messaging System (IMES) and pseudolite-based positioning techniques. His pioneering introduction of "high-accuracy IMES using real-time kinematic Doppler positioning" represents a notable advancement, enabling centimeter- to decimeter-level accuracy indoors — a level of precision previously difficult to achieve without satellite signals. He has also tackled the practical challenge of cycle slip in carrier phase-based positioning, proposing multiplexed receiver architectures to improve success rates in real-world deployments. Beyond pure positioning, Ebinuma has contributed to active-localization strategies for mobile robots, combining floor-embedded RFID tags with IMES to enhance navigational robustness in coarsely structured environments. His research collectively supports seamless indoor-outdoor robot navigation, a capability increasingly critical for autonomous systems. With citations spanning multiple publications since 2010, his work continues to inform researchers developing next-generation localization frameworks for robotics and beyond.