To define every existence.
Position, space, distance, connection: unified into a single technology.
QZSS L6 · CLAS / RTK: centimeter-level positioning
Position, space, distance, connection: unified into a single technology.
QZSS L6 · CLAS / RTK: centimeter-level positioning
Convert a receiver's raw log to RINEX, inspect it, check its quality, transform tracks between formats, move coordinates between systems. Open one and it works: nothing to install, nothing to sign up for.
Every satellite that makes positioning work, listed by system. How many stand above you right now, and where any one of them is at this moment. Both open without an account.
What QZSS (Michibiki) broadcasts, how CLAS gives centimetres from the sky, where the 1,300 state stations and the free community bases are, why every height in the country changed in 2025, and which radio rules apply to the kit you bring. Six pages, primary sources, dates on every number.