[1] Zhao Yi, Wang Qing, Zeng Qingxi,. Multipath mitigation method for tracking Galileo signals [J]. Journal of Southeast University (English Edition), 2008, 24 (2): 197-200. [doi:10.3969/j.issn.1003-7985.2008.02.015]
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Multipath mitigation method for tracking Galileo signals(
)
一种伽利略信号跟踪的多路径消除方法
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 24
- Issue:
- 2008 2
- Page:
- 197-200
- Research Field:
- Other Disciplines
- Publishing date:
- 2008-06-03
Info
- Title:
- Multipath mitigation method for tracking Galileo signals
- 一种伽利略信号跟踪的多路径消除方法
- Author(s):
- Zhao Yi, Wang Qing, Zeng Qingxi
- School of Instrument Science and Engineering, Southeast University, Nanjing 210096, China
- Keywords:
- Galileo signal; global positioning system(GPS); multipath; delay-locked loop; strobe correlators
- PACS:
- V249.36
- DOI:
- 10.3969/j.issn.1003-7985.2008.02.015
- Abstract:
- In order to improve the performance of multipath mitigation in tracking Galileo signals, a new multipath mitigation method named early-late strobe correlator(ELSC)is proposed.By applying the strobe correlator used widely in global positioning system(GPS)scenarios to Galileo E1 signals, it can be found that the strobe correlator has an undesirable level of performance when the delay of multipath signals is about 0.5 chip.Combining several strobe correlators, the ELSC can effectively mitigate the multipath effect especially for the multipath signals with the 0.5 chip delay.The multipath error envelopes between the strobe correlator and the ELSC are compared for Galileo E1 signals.The simulation results indicate that the ELSC performs excellently on multipath mitigation, and can be applied in both Galileo scenarios and GPS scenarios.
- 针对伽利略信号调制的特点, 提出了一种基于滤波相关器法的多路径消除方法ELSC(early-late strobe correlator).通过对滤波相关器法应用于伽利略E1信号的跟踪情况进行分析, 发现滤波相关器法不能消除延迟为0.5个码片附近的多路径信号影响.ELSC方法通过对几个滤波相关器的叠加, 能有效消除0.5个码片附近的多路径信号影响.通过仿真比较了ELSC方法和滤波相关器法对于伽利略信号的多路径误差包络.结果表明ELSC方法优于传统的滤波相关器法, 不仅适用于伽利略信号的跟踪, 同时也适用于GPS信号的跟踪.
References:
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[4] Srivastav Mudit, Lee Junyu, Bhola Nipun, et al.The application of GPS multipath mitigation techniques on BOC signals [C]//Proc of International Global Navigation Satellite Systems Society, IGNSS Symposium 2006. Holiday Inn, Surfers Paradise, Australia, 2006:17-21.
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[6] Simsky Andrew, Sleewaegen Jean-Marie, Nemry Pierre.Early performance results for new Galileo and GPS signals-in-space [C]//Proc of ENC GNSS 2006. Manchester, 2006:7-10.
[7] Dovis Fabio, Presti Letizia Lo, Pini Marco, et al.A modular architecture for the real-time reconfigurability of GNSS receivers [C]//Proc of the 46th International Symposium Electronics in Marine. Zadar, Croatia, 2004:16-18.
[8] Ray J K, Fenton P.GPS code and carrier multipath mitigation using a multiantenna system [J].IEEE Transactions on Aerospace and Electronic Systems, 2001, 37(1):183-195.
[9] Braasch M S.Performance comparison of multipath mitigating receiver architectures [C]//Proceedings of IEEE Aerospace Conference. Big Sky, MT, USA, 2001, 31:31309-31315.
[10] Lee Chulho, Yoo Seungsoo, Yoon Seokho, et al.A novel multipath mitigation scheme based on slope differential of correlator output for Galileo systems [C]//8th International Conference on Advanced Communication Technology. Piscataway, NJ, USA:IEEE, 2006.
Memo
- Memo:
-
Biographies: Zhao Yi(1977—), male, graduate;Wang Qing(corresponding author), male, doctor, professor, wq-seu@seu.edu.cn.
Foundation item: The National Key Technology R & D Program of China during the 11th Five-Year Plan Period(No.2008BAJ11B05).
Citation: Zhao Yi, Wang Qing, Zeng Qingxi.Multipath mitigation method for tracking Galileo signals[J].Journal of Southeast University(English Edition), 2008, 24(2):197-200.