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Relativistic versus Newtonian Frames
2013
Positioning
Only a causal class among the 199 Lorentzian ones, which do not exists in the Newtonian space-time, is privileged to construct a generic, gravity free and immediate (non retarded) relativistic positioning system. This is the causal class of the null emission coordinates. Emission coordinates are defined and generated by four emitters broadcasting their proper times. The emission coordinates are covariant (frame independent) and hence valid for any user. Any observer can obtain the values of his
doi:10.4236/pos.2013.41011
fatcat:gywgcey55javxjggp552zbbi7u