Rui Hirokawa
Principal Expert at Mitsubishi Electric
Yokohama, Japan
Summary
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Senior🎓
Top SchoolRui Hirokawa is a Principal Expert at Mitsubishi Electric with 15+ years leading guidance, navigation and control engineering for space and defense programs, currently driving high-accuracy GNSS services like Japan’s QZSS CLAS. He combines deep academic credentials (PhD, University of Tokyo) with hands-on system design—from tightly coupled GNSS/INS for UAVs and ground vehicles to reentry guidance for space missions—and now shapes international standards on RTCM SC-104, 3GPP and ICG. Known for translating advanced research (PPP-RTK, Precise Orbit Determination, robust control and signal processing) into operational satellite navigation services, he chairs QZSS working groups and manages complex multi-disciplinary projects. An open-source-minded engineer, he also contributes to OSS tools such as PHP and Scilab, reflecting a practical preference for reproducible tooling alongside mission-critical systems.
15 years of coding experience
31 years of employment as a software developer
Doctor of Philosophy (Ph.D.), Aerospace, Aeronautical and Astronautical Engineering, Doctor of Philosophy (Ph.D.), Aerospace, Aeronautical and Astronautical Engineering at 東京大学 / The University of Tokyo
Github Skills (17)
python10
manifold10
blas10
petsc10
lapack10
scilab10
root-finding10
quantum-computing10
linear-algebra10
scientific-computing10
numerical-computing10
numerical9
php9
css8
interpreter8
Programming languages (4)
Github contributions (5)
hirokawa/cssrlib
Nov 2020 - Jan 2023
Python Toolkit for satellite-based open PPP/PPP-RTK services
Contributions:5 releases, 1 review, 42 commits in 2 years 2 months
moriyoshi/libmbfl
Oct 2013 - Aug 2016
Contributions:4 commits, 3 PRs, 4 pushes in 2 years 10 months
phphandlingencoding
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