多板卡多模卫星信号模拟器的研究与实现  

Research and implementation of multi-card multi-mode satellite signal simulator

作　　者：姜东方[1,2] 纪元法[1,2] 孙希延[1,2] 

机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541004 [2]广西精密导航技术与应用重点实验室,广西桂林541004

出　　处：《电子技术应用》2017年第7期70-73,共4页Application of Electronic Technique

基　　金：国家自然科学基金(61362005;60802018;61561016);广西自然科学基金(2013GXNSFA019004;2014GXNSFAA118352);广西研究生教育创新计划(YCSZ2015146)

摘　　要：针对多模多频点卫星信号模拟器设计难度高、占用系统硬件资源大的问题,提出一种多板卡传输与同步方式生成卫星导航信号的设计方案。该方案以FPGA+DSP作为核心处理器,并集成了高速D/A转换以及射频上变频电路,详细介绍了信号传输与同步方案的设计思想及实现。通过联合定位测试结果表明,该方案有效降低硬件平台及芯片的个体性差异带来的误差,实现信号同步生成,设计灵活、工作可靠稳定,对于低成本实现多系统多频点卫星信号模拟器的研究具有重要意义。For the issue of multi-mode multi-frequency satellite signal simulator system occupies a large resource of hardware and difficult to achieve, this paper puts forward a multi-board transmission and synchronization mode to generate satellite navigation signals. The scheme makes FPGA＋DSP as the core processor, and integrates high-speed D/A conversion and RF upconversion circuit, detailing the design of high-speed signal transmission and synchronization. The co-locating test result shows that the scheme effectively reduces the error of different hardware platforms and chips bring, possessing the characteristics of flexible, stable and reliable, having important significance for low-cost to achieve the design of multi-mode multi-frequency satellite signal simulator system.

关 键 词：GNSS卫星信号模拟器 FPGA 多板卡 跨时钟域 源同步 

分 类 号：TN965.74[电子电信—信号与信息处理]