Design of pseudo-satellite baseband signal based on FPGA and ARM architecture

NIE Zihang; SHANG Junna; ZHOU Liwei; ZHANG Jie; SHI Huli

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Design of pseudo-satellite baseband signal based on FPGA and ARM architecture

Design & Manufacture | 更新时间：2026-07-20

- Design of pseudo-satellite baseband signal based on FPGA and ARM architecture
- Vol. 45, Issue 7, Pages: 98-103(2026)
- 作者机构：
  
  1. 杭州电子科技大学通信工程学院,浙江,杭州,310018
  2. 中国科学院国家天文台,北京,100101
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN967
- Published：2026
- 稿件说明：
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NIE Zihang, SHANG Junna, ZHOU Liwei, et al. Design of pseudo-satellite baseband signal based on FPGA and ARM architecture[J]. 2026, 45(7): 98-103.
DOI：

NIE Zihang, SHANG Junna, ZHOU Liwei, et al. Design of pseudo-satellite baseband signal based on FPGA and ARM architecture[J]. 2026, 45(7): 98-103. DOI：

摘要

针对传统伪卫星硬件电路设计复杂，导航电文传输过程中数据冗余不同步的难点，提出了一种现场可编程门阵列(FPGA)+高级精简指令集处理器（ARM）架构的伪卫星基带信号设计方法。该设计方法包括电文通信预处理模块、异步先入先出（FIFO）队列模块、信号生成模块。首先

对各模块进行了功能仿真验证分析，然后利用示波器、频谱仪等设备对载波、电文、时钟、粗捕获（C/A）码等进行了测试验证。实验结果表明，采用该种方法生成的载波信号稳定在20.4529MHz，载波质量稳定，电文通信传输数据准确且无冗余，C/A码与系统各个时钟源信号稳定。载波中心频率测试准确度达到99.96%，设计达到预期效果。

Abstract

Aiming at the difficulties of complex design of traditional pseudo-satellite hardware circuits and data redundancy and asynchrony in the process of navigation message transmission

a design method for pseudo-satellite baseband signal based on field programmable gate array（FPGA）+ advanced RISC machine(ARM)architecture is proposed.The design method includes a preprocessing module for message communication

an asynchronous first-in first-out(FIFO)queue module and a signal generation module.Firstly

functional simulation verification and analysis of each module are carried out.Then

the carrier

message

clock

and coarse/acquisition(C/A) code are tested and verified by using equipment such as an oscilloscope

a spectrum analyzer.Experimental results show that the carrier signal generated by this method is stable at 20.4529MHz

the carrier quality is stable

the transmission data of the message communication is accurate and non-redundant

and the C/A code and each clock source signal of the system are stable.The accuracy of the carrier center frequency test reaches 99.96%

and the design achieves the expected effect.

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