Assisted-GNSS (A-GNSS) is an interesting technology that can consistently improve positioning performance and reduce terminal complexity. One of the possible data that the A-GNSS can provide is the satellite orbit (satellite ephemeris) necessary to determine the user position starting from pseudorange measurements. In this paper, we propose two novel data structures for the transmission of ephemeris through the assistance network. It is shown that, adopting different interpolation techniques, it is possible to consistently reduce the amount of data to be transmitted and extend the ephemeris validity to 24 hours.
Ephemeris Interpolation Techniques for Assisted GNSS Services / M. Iubatti; M. Villanti; A. Vanelli-Coralli; G.E. Corazza; S. Corazza. - STAMPA. - (2008), pp. 185-197. (Intervento presentato al convegno Tyrrhenian International Workshop on Digital Communications).
Ephemeris Interpolation Techniques for Assisted GNSS Services
IUBATTI, MATTEO;VILLANTI, MARCO;VANELLI CORALLI, ALESSANDRO;CORAZZA, GIOVANNI EMANUELE;
2008
Abstract
Assisted-GNSS (A-GNSS) is an interesting technology that can consistently improve positioning performance and reduce terminal complexity. One of the possible data that the A-GNSS can provide is the satellite orbit (satellite ephemeris) necessary to determine the user position starting from pseudorange measurements. In this paper, we propose two novel data structures for the transmission of ephemeris through the assistance network. It is shown that, adopting different interpolation techniques, it is possible to consistently reduce the amount of data to be transmitted and extend the ephemeris validity to 24 hours.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
