Hardware implementation method for generating B1C signal pseudorandom noise code

Abstract

The invention provides a hardware implementation method for generating a B1C signal pseudorandom noise code, which is characterized by comprising the following steps of: 1, designing a Legendre hardware output implementation method based on a block memory; 2, designing a hardware circuit scheme based on block ROM shared B1C pseudo-random noise code output; and 3, proposing a scheme of multi-channel time division multiplexing of the block memory in the FPGA, and realizing a multi-channel output method of the sequence. The invention aims to solve the problem that a multichannel B1C signal pseudocode generator occupies too many hardware resources, a multichannel B1C pseudo-random noise code output hardware design based on an FPGA and a time division multiplexing algorithm is provided. A specific design scheme and a simulation result are given, multichannel output of the B1C signal pseudo-random noise code of the low-power Beidou navigation receiver is realized, and the problems that thegenerated pseudo code sequence occupies too much hardware resources and the circuit structure is complex are solved.

Description

technical field [0001] The present invention relates to a hardware implementation method of a pseudo-random noise code, in particular to a hardware implementation method of generating a B1C signal pseudo-random noise code. Background technique [0002] The global satellite navigation system can complete the work of positioning, navigation and timing. With the continuous improvement and development of the global satellite navigation system, people have higher and higher requirements for the positioning and navigation performance and power consumption of the navigation receiver. The application of Beidou navigation receiver will become more and more extensive. For the Beidou B1C navigation signal of code division multiple access, the ranging code is an indispensable part, which is used to distinguish different Beidou satellites and complete the ranging positioning. In satellite navigation receivers, pseudocode generators are used for both signal acquisition and tracking. Des...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of too many hardware resources and a large amount of calculation when generating multi-channel B1C signal pseudo-random noise codes, and proposes a hardware implementation method for generating B1C signal pseudo-random noise codes

Images