并行码相位结合分形重构的TMBOC调制信号捕获算法

上海交通大学学报（自然版） ›› 2016, Vol. 50 ›› Issue (05): 782-787.

• 无线电电子学、电信技术 • 上一篇下一篇

并行码相位结合分形重构的TMBOC调制信号捕获算法

张天骐,闫振华,欧旭东,钱文瑞

(重庆邮电大学信号与信息处理重庆市重点实验室，重庆 400065)

收稿日期:2015-05-04 出版日期:2016-05-28 发布日期:2016-05-28
基金资助:
国家自然科学基金资助项目(61371164,61275099,61102031),信号与信息处理重庆市市级重点实验室建设项目(CSTC2009CA2003),重庆市杰出青年基金项目(CSTC2011jjj140002),重庆市自然科学基金项目(CSTC2012JJA40008),重庆市教育委员会科研项目(KJ120525，KJ130524),重庆市研究生科研创新项目(CYS14140)

Acquisition Algorithm Combining Parallel Code Phase with FractalReconstruction of TMBOC Modulation Signal

ZHANG Tianqi,YAN Zhenhua,OU Xudong,QIAN Wenrui

(Chongqing Key Laboratory of Signal and Information Processing, Chongqing University of Posts and Telecommunications, Chongqing 400065, China)

Received:2015-05-04 Online:2016-05-28 Published:2016-05-28

摘要/Abstract

摘要： 摘要：针对TMBOC调制信号自相关函数多峰值造成的捕获模糊性问题，提出了一种并行码相位结合分形重构去除模糊性的捕获算法.该算法首先对接收信号解调,然后用本地PN和BOC码分别与解调后的信号循环相关，对相关结果取模相加,最后利用分形重构算法折叠出没有副峰的相关函数.理论分析和仿真结果表明，重构算法能有效捕获到信号，算法复杂度较低，而且相关峰值比ASPeCT算法提高了43.7%，经过两径信道时主峰能量达到96%.

关键词: TMBOC调制；重构；捕获, 全球定位系统L1C频点

Abstract: Abstract： Aimed at the ambiguity in acquisition of the TMBOC modulation signal caused by the multipeaks of autocorrelation function, this paper proposed an acquisition algorithm combining parallel code phase with fractalreconstruction to remove ambiguity. The algorithm demodulates the received signal, and uses local PN code and BOC code to correlate with demodulated signal. Next, it takes the absolute value of the results and addition. Finally, it utilizes the fractalreconstruction algorithm to fold a new correlation function without subpeaks. Theoretical analysis and simulation results show that the algorithm can capture the signal effectively with low complexity. Moreover, its correlation peak increases by 43.7% compared to the ASPeCT algorithm, and its main peak power reaches 96% through twopath channel.

Key words: Key words： TMBOC modulation, reconstruction, acquisition, global positioning system (GPS) L1C

中图分类号:

TN 911.7

张天骐,闫振华,欧旭东,钱文瑞. 并行码相位结合分形重构的TMBOC调制信号捕获算法[J]. 上海交通大学学报（自然版）, 2016, 50(05): 782-787.

ZHANG Tianqi,YAN Zhenhua,OU Xudong,QIAN Wenrui. Acquisition Algorithm Combining Parallel Code Phase with FractalReconstruction of TMBOC Modulation Signal[J]. Journal of Shanghai Jiaotong University, 2016, 50(05): 782-787.

参考文献

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并行码相位结合分形重构的TMBOC调制信号捕获算法

Acquisition Algorithm Combining Parallel Code Phase with FractalReconstruction of TMBOC Modulation Signal

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