Patent ID: 9720096
Date: 2017-08-01
CPC Classifications: G01S

Claim:
1. A method for improving tracking of a data transmission signal emitted to a receiver of a satellite navigation system in addition to navigation signals transmitted to the receiver by the satellites, comprising: transmission to the receiver, during an improvement period TAAi, and by means of an improvement signal emitted in coherence with the data transmission signal, of data Ni or of other data Nai making it possible to predict the data Ni, the data Ni being further transmitted to the receiver by means of the data transmission signal during a transmission period TAi starting after the improvement period TAAi ends, reception, by the receiver, of the data Ni, or of the other data Nai, which are transmitted by means of the improvement signal, generating symbols to modulate the data transmission signal during the transmission period TAi, by means of the data Ni received or of the other data Nai received by the receiver and which have been transmitted by means of the improvement signal, and tracking the data transmission signal while removing an effect of the modulation of the data transmission signal using the symbols generated.