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基于時(shí)頻融合的長碼直接捕獲優(yōu)化算法研究

曾芳玲,  歐陽曉鳳,  徐浩,  呂大千

曾芳玲, 歐陽曉鳳, 徐浩, 呂大千. 基于時(shí)頻融合的長碼直接捕獲優(yōu)化算法研究[J]. 電子與信息學(xué)報(bào), 2019, 41(2): 309-316. doi: 10.11999/JEIT180119
引用本文: 曾芳玲, 歐陽曉鳳, 徐浩, 呂大千. 基于時(shí)頻融合的長碼直接捕獲優(yōu)化算法研究[J]. 電子與信息學(xué)報(bào), 2019, 41(2): 309-316. doi: 10.11999/JEIT180119
Fangling ZENG, Xiaofeng OUYANG, Hao XU, Daqian Lü. Improved Long-code Direct Acquisition Algorithm Based on Time-frequency Fusion[J]. Journal of Electronics & Information Technology, 2019, 41(2): 309-316. doi: 10.11999/JEIT180119
Citation: Fangling ZENG, Xiaofeng OUYANG, Hao XU, Daqian Lü. Improved Long-code Direct Acquisition Algorithm Based on Time-frequency Fusion[J]. Journal of Electronics & Information Technology, 2019, 41(2): 309-316. doi: 10.11999/JEIT180119

基于時(shí)頻融合的長碼直接捕獲優(yōu)化算法研究

doi: 10.11999/JEIT180119

  • 國防科技大學(xué)電子對(duì)抗學(xué)院 ??合肥 ??230037

基金項(xiàng)目: 安徽省自然科學(xué)基金(1408085MF129)
詳細(xì)信息
    作者簡(jiǎn)介:

    曾芳玲：女，1970年生，教授，主要從事導(dǎo)航與時(shí)頻方面的研究

    歐陽曉鳳：女，1989年生，博士生，研究方向?yàn)樾l(wèi)星導(dǎo)航與導(dǎo)航對(duì)抗

    徐浩：男，1992年生，碩士生，研究方向?yàn)閷?dǎo)航與定位和衛(wèi)星信號(hào)捕獲

    呂大千：男，1990年生，博士生，研究方向?yàn)閷?dǎo)航與時(shí)間頻率技術(shù)

    通訊作者:

    歐陽曉鳳　xfouyang@sina.com

  • 中圖分類號(hào): TN967.1

Improved Long-code Direct Acquisition Algorithm Based on Time-frequency Fusion

  • Institute of Electronic Countermeasures, National University of Defense Technology, Hefei 230037, China

Funds: The Anhui Provincial Natural Science Foundation (1408085MF129)
  • 摘要:

    長碼因其碼率高、周期長的特點(diǎn)，是現(xiàn)有導(dǎo)航系統(tǒng)廣泛采用的軍用信號(hào)體制。該文針對(duì)長碼間接捕獲方法的不足，以及擴(kuò)展復(fù)制重疊捕獲算法和均值捕獲算法的局限性，提出一種以優(yōu)化復(fù)雜度和搜索速度為目標(biāo)的，基于擴(kuò)展復(fù)制重疊捕獲(XFAST)和均值算法相融合的時(shí)頻捕獲改進(jìn)方法，給出了該算法的基本原理和捕獲結(jié)果。對(duì)該算法的信噪比條件和復(fù)雜度進(jìn)行了分析仿真，進(jìn)一步論證了該算法應(yīng)用于長碼直接捕獲的可行性和優(yōu)良性。

    Abstract:

    At present, long-code with the characteristic of high bit rate and long period is widely used in satellite navigation system as military signal. To overcome the shortcomings of the indirect acquisition method for long-code, the limitations of the extended replication overlay acquisition algorithm and the mean acquisition algorithm, an improved time-frequency capture method based on the Extended replica Folding Acquisition Search Technique (XFAST) and the mean algorithm is proposed. The feasibility of the algorithm is simulated and the performance of the algorithm is analyzed. The simulation experiment shows the superiority of the proposed algorithm.

    • HTML全文

  • 圖  1  擴(kuò)展復(fù)制原理

    圖  2  擴(kuò)展復(fù)制重疊捕獲過程

    圖  3  擴(kuò)展復(fù)制重疊捕獲結(jié)果仿真

    圖  4  均值算法原理

    圖  5  均值捕獲過程

    圖  6  均值捕獲方法的仿真結(jié)果

    圖  7  改進(jìn)算法的基本原理

    圖  8  優(yōu)化算法的粗捕獲處理過程

    圖  9  優(yōu)化算法的精捕獲過程

    圖  10  改進(jìn)算法的捕獲仿真結(jié)果

    圖  11  改進(jìn)算法的工作信噪比分析

    圖  12  改進(jìn)算法與擴(kuò)展復(fù)制重疊算法和均值算法時(shí)間復(fù)雜度對(duì)比圖

    表  1  各算法在同等參數(shù)下的捕獲結(jié)果對(duì)比

    算法參數(shù)G1T1(s)Doppler誤差(Hz)
    G2T2(s)
    XFASTM=4150.6533.02526
    55.56508.35
    均值法i=8151.018.88526
    107.25234.65
    改進(jìn)算法M=4165.3327.10210
    i=853.65687.56
    下載: 導(dǎo)出CSV

    表  2  各算法在各自最優(yōu)參數(shù)下的比較結(jié)果

    算法參數(shù)G1T1(s)Doppler誤差(Hz)
    G2T2(s)
    XFASTM=6165.2445.40526
    45.68360.075
    均值法i=12152.148.18626
    92.651178.68
    改進(jìn)算法M=4165.3327.10210
    i=853.65687.56
    下載: 導(dǎo)出CSV
  • KAPLAN D E and CHRISTOPHER J H. Understanding GPS: Principles and Applications[M]. London: Artech House Inc, 2006: 181–188.
    GUO Xinpeng, SUN Hua, ZHAO Hongbo, et al. A modified LFF method for direct P-code acquisition in satellite navigation[C]. International Conference on Communicatins and Networking in China, Beijing, China, 2016: 499–508.
    BINHEE Kim and SEUNGHYUN Kong. Design of FFT-Based TDCC for GNSS acquisition[J]. IEEE Transactions on Wireless Communications, 2014, 13(5): 2798–2808. doi: 10.1109/TWC.2014.040714.131884
    CHAE K and YOON S. An improved direct acquisition scheme for rapid P code acquisition[C]. International Conference on Applied System Innovation, Osaka, Japan, 2017: 376–379.
    劉基余. 北斗衛(wèi)星導(dǎo)航系統(tǒng)的現(xiàn)況與發(fā)展[J]. 遙測(cè)遙控, 2013, 34(8): 1–8. doi: 10.3969/j.issn.2095-1000.2013.03.001

    LIU Jiyu. Status and development of the Beidou navigation satellite system[J]. Journal of Telemetry,Tracking and Command, 2013, 34(8): 1–8. doi: 10.3969/j.issn.2095-1000.2013.03.001
    徐浩. GPS P碼直接捕獲技術(shù)研究[D]. [碩士論文], 國防科技大學(xué), 2017.

    XU Hao. Research on GPS P-code direct acquisition technology[D]. [Master dissertation], National University of Defense Technology, 2017.
    聶楊. 在GPS干擾試驗(yàn)中運(yùn)用DOP算法評(píng)估干擾效能[J]. 電子信息對(duì)抗技術(shù), 2017, 5(5): 58–62. doi: 10.3969/j.issn.1674-2230.2017.05.011

    NIE Yang. Using DOP algorithm to evaluate jamming efficiency in GPS jamming tests[J]. Electronic Information Warfare Technology, 2017, 5(5): 58–62. doi: 10.3969/j.issn.1674-2230.2017.05.011
    HECKROTH K, SCHERRER K, and NIELSON J. Fast direct-Y GPS acquisitions with inaccurate time[C]. Proceedings of the 17th International Technical Meeting of the Satellite Division of The Institute of Navigation, Long Beach, USA, 2004: 573–578.
    ALTAF M M and AHMAD E H. An ultra-high-speed FPGA based digital correlation processor[J]. IEICE Electron Express, 2015, 12(8): 1–7. doi: 10.1587/elex.12.20150214
    YANG Chun. FFT Acquisition of periodic, aperiodic, puncture, and overlaid code sequences in GPS[C]. Proceeding of GPS institute of navigation, Salt Lake City, USA, 2011: 137–148.
    趙盼盼, 姚彥鑫. 衛(wèi)星導(dǎo)航中XFAST捕獲的降計(jì)算量去模糊處理算法[J]. 電訊技術(shù), 2017, 57(10): 1205–1212. doi: 10.3969/j.issn.1001-893x.2017.10.017

    ZHAO Panpan and YAO Yanxin. An ambiguity resolving algorithm for XFAST acquisition with less computational amount in satellite navigation[J]. Telecommunication Engineering, 2017, 57(10): 1205–1212. doi: 10.3969/j.issn.1001-893x.2017.10.017
    唐小妹, 雍少為, 王飛雪. 存在偽碼多普勒條件下的XFAST性能分析[J]. 通信學(xué)報(bào), 2010, 31(18): 54–59. doi: 10.3969/j.issn.1000-436X.2010.08.008

    TANG Xiaomei, YONG Shaowei, and WANG Feixue. Performance of XFAST in the presence of code Doppler[J]. Journal on Communications, 2010, 31(18): 54–59. doi: 10.3969/j.issn.1000-436X.2010.08.008
    KRASNR R and NORMAN F. GPS receiver and method for processing GPS signals[P]. United States Patent, 6725159, 2004.
    MATHEWS M B and MACDORAN P F. GNSS long-code acquisition, ambiguity resolution, and signal validation[P]. United States Patent, 9658341, 2017.
    唐小妹, 龐晶, 黃仰博, 等. XFAST長碼直捕算法參數(shù)優(yōu)化設(shè)計(jì)[J]. 中南大學(xué)學(xué)報(bào)(自然科學(xué)版), 2014, 45(4): 1113–1118.

    TANG Xiaomei, PANG Jing, HUANG Yangbo, et al. Optimization of XFAST design[J]. Journal of Central South University (Science and Technology), 2014, 45(4): 1113–1118.
    MUSUMECI L, DOVIS F, SILVA P F, et al. Design of a very high sensitivity acquisition system for a space GNSS receiver[C]. IEEE/ION Position, Location and Navigation Symposium, California, USA, 2014: 556–568.
    沈鋒, 李偉東, 李強(qiáng). 基于I/Q支路相干積分觀測(cè)濾波的GPS接收機(jī)信號(hào)跟蹤方法[J]. 電子與信息學(xué)報(bào), 2015, 31(1): 37–42. doi: 10.11999/JEIT140314

    SHEN Feng, LI Weidong, and LI Qiang. GPS receiver signal tracking method based on I/Q branch coherent integration measurements filter[J]. Journal of Electronics &Information Technology, 2015, 31(1): 37–42. doi: 10.11999/JEIT140314
    PASQUAL P M, ELOSEGUI P, LIND F, et al. An exploration of software-based GNSS signal processing at multiple frequencies[C]. American Astronomical Society Meeting, Washington., USA, 2017: 229–238.
    LECLERE J, BOTTERON C, and FARINE P A. Feature article: High sensitivity acquisition of GNSS signals with secondary code on FPGAs[J]. IEEE Aerospace and Electronic Systems Magazine, 2017, 32(8): 46–63. doi: 10.1109/MAES.2017.160176
    陳松, 黃開枝, 吉江. 一種基于頻域采樣的序列快速捕獲算法[J]. 電子與信息學(xué)報(bào), 2012, 34(8): 1807–1813. doi: 10.3724/SP.J.1146.2011.01383

    CHEN Song, HUANG Kaizhi, and JI Jiang. A fast sequential acquisition method based on frequency sampling[J]. Journal of Electronics &Information Technology, 2012, 34(8): 1807–1813. doi: 10.3724/SP.J.1146.2011.01383
    XIONG Zhulin, AN Jianping, and WANG Aihua. Improved double block zero padding algorithm for P code direct acquisition[J]. Transactions of Beijing Institute of Technology, 2017, 37(5): 515–520. doi: 10.15918/j.tbit1001-0645.2017.05.015
    WANG Ningyuan, FENG Wenquan, ZHAO Hongbo, et al. A self-adaptive fast direct acquisition approach for long PN code in the high dynamic circumstance[C]. Proceedings of the 29th International Technical Meeting of The Satellite Division of the Institute of Navigation, Portland, USA, 2016: 509–520.
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  • 收稿日期:  2018-01-29
  • 修回日期:  2018-11-20
  • 網(wǎng)絡(luò)出版日期:  2018-11-29
  • 刊出日期:  2019-02-01

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