改进的TMBOC调制信号闸波相关鉴相方法

doi:10.3969/j.issn.1001-2400.2018.02.002

西安电子科技大学学报

改进的TMBOC调制信号闸波相关鉴相方法

李文刚;王屹伟;黄辰

(西安电子科技大学通信工程学院，陕西西安 710071)

收稿日期:2017-05-20 出版日期:2018-04-20 发布日期:2018-06-06
作者简介:李文刚(1980-)，男，副教授，E-mail：wgli@xidian.edu.cn
基金资助:
国家自然科学基金资助项目(61201136)；高等学校学科创新引智计划资助项目(B08038)

Improved strobe correlation discrimination method for time-multiplex binary offset carrier modulated signal

LI Wengang;WANG Yiwei;HUANG Chen

(School of Telecommunications Engineering, Xidian Univ., Xi'an 710071, China)

Received:2017-05-20 Online:2018-04-20 Published:2018-06-06

摘要/Abstract

摘要：

为了实现卫星导航系统中时分二进制偏移载波调制信号的无模糊抗多径跟踪问题，提出一种基于闸波相关的改进鉴相方法．首先，将时分二进制偏移载波调制信号与偏移0.5个码片的W2形闸波和偏移0.5个码片的伪随机码分别进行相关；然后，将相关结果相乘，即可获得无模糊且对称性良好的码鉴相曲线．对所提方法得到的码鉴相曲线的性质进行了分析和实验仿真，结果证明: 这种方法实现简单，且得到的鉴相曲线基本具有较好的中心对称性，具有较强的抗多径能力，能够实现无模糊跟踪．所提方法相对于已有的闸波相关方法更加适合于时分二进制偏移载波调制信号的鉴相．

关键词: 卫星导航系统, 时分二进制偏移载波调制, 闸波相关, 抗多径, 无模糊跟踪

Abstract:

In order to solve the problem of ambiguous tracking and multipath mitigation of new signal time-multiplexed binary offset carrier modulated signal in the global navigation satellite system, this paper proposes an improved strobe correlation method which calculates the correlation of the received TMBOC signal with the W2 strobe waveform in 0.5 code offset and the pseudo-random code code in 0.5 code offset, respectively, and then the two correlations are multiplied. In this way an unambiguous and good symmetrical code discrimination curve is obtained. The characteristics of the obtained code discrimination curve by the proposed method is analyzed and simulated, and the result shows: the proposed method is easy to realize, and the obtained code discrimination curve has good central symmetry, strong multipath mitigation capability and can be used for an unambiguous tracking, so it is more suitable for the TMBOC signal discrimination compared with the existing strobe correlation methods and improved methods.

Key words: global navigation satellite system, time-multiplexed binary offset carrier modulated signal, strobe correlation, multipath mitigation, unambiguous tracking

李文刚;王屹伟;黄辰. 改进的TMBOC调制信号闸波相关鉴相方法[J]. 西安电子科技大学学报, 2018, 45(2): 7-12.

LI Wengang;WANG Yiwei;HUANG Chen. Improved strobe correlation discrimination method for time-multiplex binary offset carrier modulated signal[J]. Journal of Xidian University, 2018, 45(2): 7-12.

参考文献

［1］ AVILA-RODRIGUEZ J A, HEIN G W, WALLNER S, et al. The MBOC Modulation: the Final Touch to the Galileo Frequency and Signal Plan［J］. Navigation, 2008, 55(1): 15-28.
［2］ YANG J L, JIN T, HUANG Z G, et al. New Generation Signal Structure Evaluation System for GNSS［C］//Lecture Notes in Electrical Engineering: 340. Heidelberg: Springer Verlag, 2015: 491-501.
［3］张兆维, 李文刚, 周彦果, 等. 高动态接收机的多普勒频偏捕获新算法［J］. 西安电子科技大学学报, 2015, 42(2): 7-12.
ZHANG Zhaowei, LI Wengang, ZHOU Yanguo, et al. New Doppler Frequency-shift Acquisition Algorithm for High Dynamic Receivers［J］. Journal of Xidian University, 2015, 42(2): 7-12.
［4］ JARDAK N, VIGNEAU W, RIES L, et al. Detection and Correction of the Side Peak Tracking of BOC Signals［C］//Proceedings of the 2015 28th International Technical Meeting of the Satellite Division of the Institute of Navigation. Manassas: Institute of Navigation, 2015: 2939-2950.
［5］ CHAE K, WOO S, YOON S, et al. A Generating Scheme of a Side-peak-free Correlation Function for TMBOC(6, 1, 4/33) Signal Tracking Based on Cross-correlations［C］//Proceedings of the 2016 International Conference on Applied System Innovation. Boca Raton: CRC Press, 2016: 75-78.
［6］ CHAE K H, LEE S R, LIU H P, et al. A Novel Unambiguous Composite Binary Offset Carrier(6, 1, 1/11) Tracking Based on Partial Correlations［J］. Computers and Electrical Engineering, 2016, 50(C): 54-66.
［7］ XU C T, LIU Z, TANG X M, et al. A Design Method of Code Correlation Reference Waveform in GNSS Based on Least-squares Fitting［J］. Sensors, 2016, 16(8): 1194.
［8］ LIU Z, PANG J, LIU Y X, et al. Double Strobe Technique for Unambiguous Tracking of TMBOC Modulated Signal in GPS［J］. IEEE Signal Processing Letters, 2015, 22(12): 2204-2208.
［9］ LIU Z, XU B, TANG X M, et al. Multipath Mitigating Technique for BOC(kn, n) Signal in GNSS［C］//Proceedings of the 2015 International Conference on Wireless Communications and Signal Processing. Piscataway: IEEE, 2015: 7341068.
［10］倪少杰, 刘瀛翔, 肖志斌, 等. GPS时分二进制偏移载波调制信号的高精度无偏抗多径算法［J］. 国防科技大学学报, 2016, 38(5): 149-153.
NI Shaojie, LIU Yingxiang, XIAO Zhibin, et al. Unbiased Multipath Mitigation Technique for GPS Time Multiplex Binary Offset Carrier Signal［J］. Journal of National University of Defense Technology, 2016, 38(5): 149-153.

改进的TMBOC调制信号闸波相关鉴相方法

Improved strobe correlation discrimination method for time-multiplex binary offset carrier modulated signal

PDF (PC)

赞

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 1

Metrics

本文评价

推荐阅读 10