Packet transmission through navigation satellites: A preliminary analysis using Monte Carlo simulations

Abstract

The transmission of GNSS constellation-wide messages through multiple satellites can be more flexible than the transmission of clock and ephemeris by each satellite. Messages may be divided into packets and routed through different satellites to optimize reception performance. This paper proposes some basic routing strategies based on packet offsetting. It then proposes a performance analysis methodology through Monte Carlo simulations. Strategies are particularized for the Galileo OS I/NAV signal and the transmission of a digital signature used by the whole constellation, and the results are analyzed in order to determine which of the proposed transmission strategies best serve the target application.