| 摘要 |
The invention relates to a global positioning receiver which receives signals from different satellites and which comprises one correlation channel, Cii, per satellite received. According to the invention, each correlator channel Cii comprises: a phase and quadrature correlation channel (12) for correlation between the received signal (Sr) and two respective local quadrature carriers (sine, cosine) that are generated by a digitally-controlled carrier osciallator (OPi)(NCOp); a code correlation channel (16) for code correlation of the output signals, I, Q, from the carrier correlation channel with the local codes (Cpi, <i) supplied by a digital generator of local codes OCi; and an integrator (20) which, for each local code, supplies output signals, Ic Qc, from correlator channel Cii of the satellite received, c denoting each of the local codes. For each channel used to correlate the signal received from a satellite, the inventive receiver comprises as many additional correlator channels as there are additional received satellites and the local point code of the received satellite is correlated with the local codes of other additional satellites. The invention can be used for EGNOS (RIMS), WAAS, GALILEO ground stations. |
