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- Why are we aiming for 11 aircraft? The near future of independent positioning guided by the Japanese version of GPS “Michibiki”Yahoo! News
- The heart of positioning signal generation: NEC’s “Michibiki” location and time information technologyNikkan Kogyo Shimbun
- Dr. Matokawa’s Galaxy Classroom 872 Knowing the location of the earth from space (Part 1)Mainichi Shimbun