论文:2016,Vol:34,Issue(4):656-662
引用本文:
宋玉龙, 廉保旺, 宋佳驹. BDS/GPS双系统软件接收机实现与性能分析[J]. 西北工业大学学报
Song Yulong, Lian Baowang, Song Jiaju. Implementation and Performance of BDS/GPS Dual-System Software Receiver[J]. Northwestern polytechnical university

BDS/GPS双系统软件接收机实现与性能分析
宋玉龙, 廉保旺, 宋佳驹
西北工业大学 电子信息学院, 陕西 西安 710072
摘要:
在经典的MATLAB GPS软件接收机的基础上,针对快速比特跳变的BDS信号给出了捕获跟踪和解帧策略,提出了BDS/GPS双系统伪距、载波相位、多普勒和载噪比观测量提取算法,推导了双系统定位定速的迭代式。采用NSL-STEREO射频前端采集实际的BDS B1和GPS L1双系统数字中频信号,设计了楼顶静态和动态实验,比较分析了实际场景下BDS/GPS双系统及各单系统的定位轨迹、定位定速误差和精度因子,验证了接收机性能并得到系统差异结论。
关键词:    MATLAB    BDS    GPS    双系统    软件接收机    观测量    射频前端    设计实验   
Implementation and Performance of BDS/GPS Dual-System Software Receiver
Song Yulong, Lian Baowang, Song Jiaju
School of Electronics and Information, Northwestern Polytechnical University, Xi'an, 710072, China
Abstract:
On the basis of the classical MATLAB GPS software receiver, an acquisition/tracking and frame decoding strategy is present for BDS signal with rapid sign transitions. What’s more, an observations extraction algorithm for BDS/GPS dual-system is proposed, including pseudo-range, carrier phase, doppler and carrier-to-noise-ratio. After that, the derivatives of dual-system position and velocity iterative equations are given. The NSL-STEREO front-end is employed to grab real intermediate frequency signal containing BDS B1 and GPS L1 parts, and a static and a dynamic experiment on the roof are designed. The ground tracks, position/velocity errors and dilution of precisions of BDS/GPS dual-system and each single system are compared and analyzed. The results validate the performance of the software receiver, and indicate the difference between systems.
Key words:    MATLAB    BDS    GPS    dual-system    software receiver    observations    front-end    design of experiments   
收稿日期: 2016-02-20     修回日期:
DOI:
基金项目: 国家自然科学基金(61301094)与陕西省科技统筹创新工程重点实验室项目(2013SZS15-K01)资助
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作者简介: 宋玉龙(1990-),西北工业大学博士研究生,主要从事GNSS软件接收机及鲁棒精密定位的研究。
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