摘要
为了实现高精度室内定位,克服GPS导航系统在室内等复杂环境定位的局限性,提出了一种基于伪卫星的高精度室内定位方案。该方案以FPGA+DSP作为核心处理器,并集成了高速A/D转换电路以及上下变频电路。详细介绍了伪卫星信号时钟同步方法和接收机抗远近效应设计方案及实现。通过对系统测试,结果表明在室内静态和动态定位精度都在3 cm以内,实现了高精度室内定位,该方案的实现对室内外无缝定位具有重要的意义。
In order to achieve high-precision indoor positioning and overcome the limitations of GPS navigation system indoor or other complex environments, a high-precision indoor positioning scheme based on pseudo satellite is proposed. FPGA ＋ DSP are used as the core processor, and high-speed A/D conversion circuit and up and down converter circuit are integrated. The design and implementation of pseudo satellite signal clock synchronization method and near-far effect elimination are introduced in detail.Through the system test, the results show that the indoor static positioning accuracy and dynamic positioning accuracy are both within 3 cm, and the high-precision indoor positioning is realized. The implementation of this scheme is of great significance for indoor and outdoor seamless positioning.
出处
《电子技术应用》
2018年第3期36-39,共4页
Application of Electronic Technique
基金
国家自然科学基金(61362005
60802018
61561016)
广西自然科学基金资助项目(2013GXNSFA019004
2014GXNSFAA118352)
广西研究生教育创新计划资助项目(YCSZ2015146)
桂林电子科技大学研究生教育创新计划资助项目(2018YJCX19)
关键词
高精度室内定位
伪卫星
时钟同步
远近效应
high precision indoor positioning
pseudo satellite
time synchronization
near-far effect
