Abstract: A GNSS (Global Navigation Satellite System) receiver apparatus includes a bank of correlators configured to receive in-phase and quadrature versions of a received signal. A code numerical controlled oscillator is configured to determine a code frequency. A GNSS pseudo random noise sequence generator is configured to generate a pseudo random noise sequence at the code frequency set by the code numerical controlled oscillator. A GNSS pseudo random noise delayed sequence generator includes a first shift register and a second shift register. Taps of the shift registers are selectable as a punctual replica, an early replica and a delayed replica of the pseudo random noise sequence. An enable circuit is configured to generate an enable signal coupled to an enable input of the flip-flops, the enable signal operating at a selectable enable frequency.

Abstract: A Pseudo-Random Noise code generator module is configured to generate PRN codes operating with different navigation standards for use with a GNSS receiver. The generator includes a number of linear shift registers including a respective number of feedback taps and a channel selection network including an output multiplexer. A first register includes a first number of taps and a second register includes a second number of taps. The first register and second register are associated with a respective feedback network to combine signals at the feedback taps to obtain a feedback signal that is selectably fed back through a selection circuit at an input of the respective register. A network can selectably concatenate the first register with the second register.

Abstract: A GNSS (Global Navigation Satellite System) receiver apparatus includes a bank of correlators configured to receive in-phase and quadrature versions of a received signal. A code numerical controlled oscillator is configured to determine a code frequency. A GNSS pseudo random noise sequence generator is configured to generate a pseudo random noise sequence at the code frequency set by the code numerical controlled oscillator. A GNSS pseudo random noise delayed sequence generator includes a first shift register and a second shift register. Taps of the shift registers are selectable as a punctual replica, an early replica and a delayed replica of the pseudo random noise sequence. An enable circuit is configured to generate an enable signal coupled to an enable input of the flip-flops, the enable signal operating at a selectable enable frequency.

Abstract: A Pseudo-Random Noise code generator module is configured to generate PRN codes operating with different navigation standards for use with a GNSS receiver. The generator includes a number of linear shift registers including a respective number of feedback taps and a channel selection network including an output multiplexer. A first register includes a first number of taps and a second register includes a second number of taps. The first register and second register are associated with a respective feedback network to combine signals at the feedback taps to obtain a feedback signal that is selectably fed back through a selection circuit at an input of the respective register. A network can selectably concatenate the first register with the second register.