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 considered.
A null frame for spacetime positioning by means of pulsating sources / Tartaglia A.; Ruggiero M.; Capolongo E.. - In: ADVANCES IN SPACE RESEARCH. - ISSN 0273-1177. - STAMPA. - 47:4(2011), pp. 645-653.
|Titolo:||A null frame for spacetime positioning by means of pulsating sources|
|Data di pubblicazione:||2011|
|Appare nelle tipologie:||1.1 Articolo in rivista|
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