London Conference Beats Drum for Galileo Acceptance
The accompanying figure shows the acquisition results of the FM3 Galileo satellite (PRN 11) E1b data channel, as computed by the NAVigation Signal Analysis and Simulation (NavSAS) group of the Politecnico di Torino/Istituto Superiore Mario Boella (ISMB) in Italy. The upper plot shows the search space along ±7 kHz Doppler frequency, while the lower one shows the search space along 4 millisecond code delay. The coherent integration time used to obtain this search space was 4 milliseconds, coupled with 11 noncoherent accumulations.The third Galileo in-orbit validation (IOV) satellite, also known as Flight Model 3 (FM), began transmitting signals last week, and the FM4 spacecraft, like the FM3 launched on October 12, is expected to come on-line soon — providing the theoretical capability of 3D positioning using solely satellites of Europe’s GNSS system.
By Inside GNSS
