Patent ID: 7180445
Filing Date: 2007-02-20
Classification: G01S

Abstract:
1. A satellite position pinpointing receiver intended to carry out combined processing of a first received radio signal and a second received radio signal (S 2 ) that differ in frequency, comprising: a first correlator circuit and a second correlator circuit receiving the first and second received signals respectively, each correlator having a correlation channel for in-phase and quadrature correlation between the respective received signal and a respective local carrier, a code correlation channel for correlation between the I- and Q-correlated received signal and a respective local code, and a code correlation channel integrator; a central-carrier phase discriminator for discriminating between the two carriers of the received signals, the phase discriminator delivering, on the basis of the signals Ip a device that delivers, on the basis of the central-carrier speed and of a subcarrier speed, the respective local carriers for the carrier correlation channels, this subcarrier being the image of the differences between each received-signal carrier and the central carrier; a code phase discriminator that delivers, on the basis of the signals Ip a numerically controlled oscillator for each code correlation channel, the oscillator delivering, on the basis of the subcarrier speed or code speed, the respective local code for each code channel.