高动态环境下长码扩频信号快捕算法

doi:10.11999/JEIT150860

Abstract
Figure/Table
References (15)
Related Citation (15)

Download: PDF (465 KB)
Export: BibTeX | EndNote (RIS)

Abstract

For high speed and high dynamic receiver, using long pseudo-noise code, seriously affected by Doppler frequency offset, this paper proposes a double dwell pseudo-noise code acquisition method based on Compressed Code Phase Correlator (CCPC) and FFT. In the first dwell search a rapid and rough compressed search is performed for some neighboring code phase using CCPC, and at the same time the parallel search for Doppler frequency offset using FFT is completed. In the second dwell, all the neighboring code phases acquired in the first dwell are searched accurately using conventional correlator. The theoretical performance analysis model for the proposed method is presented, whose correctness is validated by Monte Carlo simulation. The simulation result shows that the proposed method has obvious advantages compared to Two-Dimensional Compressed Correlator (TDCC) on Mean Acquisition Time (MAT), as well as on the bandwidth and precision of Doppler frequency. Less resources are consumed than other methods based on FFT when using long pseudo-noise code.

Key words： Spreaded Spectrum Communication (SSC) Pseudo-noise code acquisition Compressed correlator FFT Double dwell search

Received: 20 July 2015 Published: 30 March 2016

PACS:

TN914.42

Fund:

The National 863 Program of China (2015AA 7072014C), The Fundamental Research Funds for Central Universities (106112013CDJZR165502, 106112013CDJZR160013, 106112013 CDJZR1160014)

Corresponding Authors: WU Haowei E-mail: wuhaowei@cqu.edu.cn

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	LIU Xiaoming
	ZHANG He
	WU Haowei
	OU Jinglan

Cite this article:

LIU Xiaoming,ZHANG He,WU Haowei等. Rapid DSSS Signal Acquisition Algorithm under High Dynamic Environment[J]. JEIT, 2016, 38(6): 1398-1405.

URL:

http://jeit.ie.ac.cn/EN/10.11999/JEIT150860 OR http://jeit.ie.ac.cn/EN/Y2016/V38/I6/1398

[1]	HOLMES J K. Spread Spectrum System for GNSS and Wireless Communications[M]. Norwood: Artech House Publishers, 2007: 2-10.
[2]	YANG C, VASQUEZ J, and CHAFFEE J. Fast direct P(Y)- code acquisition using XFAST[C]. Proceedings of the 12th International Technical Meeting of the Satellite Division of The Institute of Navigation, Nashville, 1999: 317-324.
[3]	LI Hong, CUI Xiaowei, and FENG Zhenming. Dual-folding based rapid search method for long PN-code acquisition[J]. IEEE Transactions on Wireless Communications, 2008, 7(12): 5286-5290. doi: 10.1109/T-WC.2008.071130.
[4]	罗炬锋, 王翔, 付耀先, 等. 基于FFT并行搜索伪码和频偏的快速捕获新方法[J]. 电子与信息学报, 2011, 33(3): 563-568. doi: 10.3724/SP.J.1146.2010.00560.
	LUO Jufeng, WANG Xiang, and Fu Yaoxian, et al. A new fast acquisition method of parallel search pseudo-code and frequency offset based on FFT[J]. Journal of Electronics & Information Technology, 2011, 33(3): 563-568. doi: 10.3724/ SP.J.1146.2010.00560.
[5]	HSIEH W H and CHANG C F. Efficient acquisition algorithm for long pseudorandom sequence[J]. IEEE Transactions on Aerospace and Electronic Systems, 2014, 50(3): 1786-1797. doi: 10.1109/TAES.2014.120460.
[6]	BAHARAK S and ALI M D. Reduced-complexity FFT-based method for Doppler estimation in GNSS receivers[J]. EURASIP Journal on Advances in Signal Processing, 2014(1): 143. doi: 10.1186/1687-6180-2014-143.
[7]	何智力, 徐颖, 袁洪, 等. 一种基于二维细化的自适应信号捕获算法[J]. 电子与信息学报, 2014, 36(10): 2450-2455. doi: 10.3724/SP.J.1146.2013.01328.
	HE Zhili, XU Ying, YUAN Hong, et al. A two-dimensional refinement algorithm for signal acquisition[J]. Journal of Electronics & Information Technology, 2014, 36(10): 2450-2455. doi: 10.3724/SP.J.1146.2013.01328.
[8]	LECLERE J, BOTTERON C, and FARINE P A. Acquisition of modern GNSS signals using a modified parallel code-phase search architecture[J]. Signal Processing, 2014, 95: 177-191. doi: 10.1016/j.sigpro.2013.08.004.
[9]	SPANGENBERG S M, POVEY G J R, SCOTT I, et al. An FFT-based approach for fast acquisition in spread spectrum communication systems[J]. Wireless Personal Communications, 2000, 13(1): 27-55. doi: 10.1023/A: 1008848916834.
[10]	SPILLARD C L, SPANGENBERG S M, and POVEY G J R. A serial-parallel FFT correlator for PN code acquisition from LEO satellites[C]. IEEE 5th International Symposium on Spread Spectrum Techniques and Applications, Sun City, 1998: 446-448. doi: 10.1109/ISSSTA.1998.723823.
[11]	KONG S and KIM B. Two-dimensional compressed correlator for fast PN code acquisition[J]. IEEE Transactions on Wireless Communications, 2013, 12(11): 5859-5869. doi: 10.1109/TWC.2013.092313.130407.
[12]	KIM B and KONG S. Two-dimensional compressed correlator for fast acquisition of BOC(m, n) signals[J]. IEEE Transactions on Vehicular Technology, 2014, 63(6): 2662-2672. doi: 10.1109/TVT.2013.2293225.
[13]	SUST M K, KAUFMANN R F, and MOLITOR F. Rapid acquisition concept for voice acticated CDMA communication[C]. Global Telecommunications Conference, San Diego, 1990: 1820-1826. doi: 10.1109/GLOCOM.1990. 116797.
[14]	SHNIDMAN D A. Evaluation of the Q function[J]. IEEE Transactions on Communications, 1974, (3): 342-346. doi: 10.1109/TCOM.1974.1092184.
[15]	TORRIERI D. Principles of Spread-Spectrum Communication Systems[M]. New York: Springer Science, 2011: 177-202.