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论文:2016,Vol:34,Issue(4):656-662 |
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引用本文: |
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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 |
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Song Yulong, Lian Baowang, Song Jiaju. Implementation and Performance of BDS/GPS Dual-System Software Receiver[J]. Northwestern polytechnical university |
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BDS/GPS双系统软件接收机实现与性能分析 |
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宋玉龙, 廉保旺, 宋佳驹 |
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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
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Implementation and Performance of BDS/GPS Dual-System Software Receiver |
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Song Yulong, Lian Baowang, Song Jiaju |
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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
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收稿日期: 2016-02-20
修回日期:
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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 |
通讯作者:
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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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参考文献: |
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[1] BeiDou Navigation Satellite System Signal in Space Interface Control Document: Open Service Signal (Version 2.0) [R]. China Satellite Navigation Office, 2013 [2] Takasu T, Yasuda A. Development of the Low-Cost RTK-GPS Receiver with an Open Source Program Package RTKLIB[C]//International Symposium on GPS/GNSS, Jeju, Korea, 2009: 1-6 [3] Herrera A M, Suhandri H F, Realini E, et al. goGPS: Open-Source MATLAB Software[J]. GPS Solutions, 2015, 20(3): 1-9 [4] Borre K, Akos DM, Bertelsen N, et al. A Software-Defined GPS and Galileo Receiver: A Single-Frequency Approach[M]. New York, USA, Birkhäuser Boston, 2007 [5] Suzuki T, Kubo N. GNSS-SDRLIB: An Open-Source and Real-Time GNSS Software Defined Radio Library[C]//ION GNSS+2014, Tampa, USA, 2014: 1364-1375 [6] Macchi F. Development and Testing of an L1 Combined GPS-Galileo Software Receiver[D]. Calgary, Alberta, Canada, University of Calgary, 2010 [7] Groves P D. GPS Signal to Noise Measurement in Weak Signal and High Interference Environments[C]//ION GNSS 2005, Long Beach, USA, 2005: 643-658 |
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