可配置多模GNSS信号捕获技术研究

Research on Configurable Multimode GNSS Signal Acquisition Technique

本文分析了四大卫星系统之间的差异性,讨论了卫星信号兼容处理的可能性。使用了可配置的思想设计多模GNSS卫星信号捕获结构,主要分析了GPS L1、BDS B1I、GLONASS L1和GALILEO E1B频点民用码的捕获方法。通过设置初始化参数,可以配置其中关键部分的组成,使其在每一次处理过程中都可以处理特定的卫星信号。最后,使用Verilog HDL语言对其中的部分子单元进行仿真实现,验证了设计的可行性。

This paper first analyzes the differences between the four satellite systems, discusses the possibility of deal with multiple satellite signal compatibly. Then, a multimode satellite signal baseband processing structure is designed with configurable idea. The acquisi- tion of GPS L1, BDS BII, GLONASS L1 and GALILEO EIB codes are analyzed. By setting the initialization parameters, you can configure the key parts, so that in each treatment process can handle a particular satellite signal. Finally, the simulation of partial subunit is carried out by using Verilog HDL, which verifies the feasibility of the design.