摘要
介绍了卫星定位接收机载波跟踪部分的设计和实现。在对比分析了载波频率跟踪(FLL)和载波相位跟踪(PLL)各自优点的基础上,提出一种易于通过FPGA实现的二阶FLL和三阶PLL相结合的载波跟踪方法。硬件实现采用Altera Cyclone Ⅱ FPGA中的EP2C70。对该模块的Verilog硬件描述语言编程方法也进行了详细说明。实验测试结果表明该设计可以很好地满足动态性能和跟踪精度的要求。
The content of this paper is focused on the design and realization of the carrier tracking in satellite navigation and positioning receiver. Based on analyzing the advantages of FLL and PLL, a method of carrier tracking which combining second-order FLL and third-order PLL is presented. This method is very easy to realize in FPGA. Hardware implementation uses Ahera＇s CycloneII EP2C70.Additionally the paper details programming method of using Verilog HDL. The test result shows that the design keep dynamics performance and tracking precision at the same time.
出处
《电子技术应用》
北大核心
2009年第7期68-70,74,共4页
Application of Electronic Technique
