Receiver for pseudo-noise signals from satellite radio-navigation systems

摘要

The present invention relates to a receiver intended for the reception of pseudo-noise signals from the satellite radio-navigation systems used for determining co-ordinates and time. This receiver uses the GLONASS and GPS systems and is characterised by its reduced dimensions and in that it does not include any complex elements such as a sampling circuit. To this end, the signal outputs and the clock output of a radio-frequencey converter are connected respectively to the first and second signal and clock inputs of a N-channel digital correlation unit. A mixer is provided in each channel of a second signal-frequency converter in said radio-frequency converter. The output of said mixer is connected to the channel output through an amplifier with an adjustable amplification ratio and through a threshold device which are connected in series. The reference input of the second-channel mixer in the second signal-frequency converter is connected to the output of a signal with a second heterodyne frequency in an apparatus for generating clock- and heterodyne-frequency signals. A first and a second frequency splitting units are further connected in series to said apparatus.