Abstract
After briefly reviewing the relativistic approach to positioning systems based on the introduction of the emission coordinates, we show how explicit maps can be obtained between the Cartesian coordinates and the emission coordinates, for a suitably chosen set of emitters, whose world lines are supposed to be known by the users. We consider Minkowski space–time and the space–time where a small inhomogeneity is introduced (i.e. a small a "gravitational" field), in 1 + 1 and 1 + 3 dimensions.
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