Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2010-01-07
Adv.Space Res.47:645-653,2011
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
19 pages, revised to match the version accepted for publication in Advances in Space Research
Scientific paper
10.1016/j.asr.2010.10.023
We introduce an operational approach to the use of pulsating sources, located at spatial infinity, for defining a relativistic positioning and navigation system, based on the use of four-dimensional bases of null four-vectors, in flat spacetime. As a prototypical case, we show how pulsars can be used to define such a positioning system. The reception of the pulses for a set of different sources whose positions in the sky and periods are assumed to be known allows the determination of the user's coordinates and spacetime trajectory, in the reference frame where the sources are at rest. We describe our approach in flat Minkowski spacetime, and discuss the validity of this and other approximations we have considered.
Capolongo Emiliano
Luca Ruggiero Matteo
Tartaglia Angelo
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