TITLE:
Relativistic versus Newtonian Frames
AUTHORS:
J.-F. Pascual-Sánchez, A. San Miguel, F. Vicente
KEYWORDS:
Null Emission Coordinates; Location Systems; Causal Class; Relativistic Positioning System; Gravimetry
JOURNAL NAME:
Positioning,
Vol.4 No.1,
February
28,
2013
ABSTRACT: 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 (her)
null emission coordinates from the emitters which provide him his (her)
position and trajectory.