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利用信號(hào)重構(gòu)的全球?qū)Ш叫l(wèi)星系統(tǒng)欺騙干擾抑制方法

盧丹,  白天霖

盧丹, 白天霖. 利用信號(hào)重構(gòu)的全球?qū)Ш叫l(wèi)星系統(tǒng)欺騙干擾抑制方法[J]. 電子與信息學(xué)報(bào), 2020, 42(5): 1268-1273. doi: 10.11999/JEIT190321
引用本文: 盧丹, 白天霖. 利用信號(hào)重構(gòu)的全球?qū)Ш叫l(wèi)星系統(tǒng)欺騙干擾抑制方法[J]. 電子與信息學(xué)報(bào), 2020, 42(5): 1268-1273. doi: 10.11999/JEIT190321
Dan LU, Tianlin BAI. Global Navigation Satellite System Spoofing Mitigation Method by Utilizing Signal Reconstruction[J]. Journal of Electronics & Information Technology, 2020, 42(5): 1268-1273. doi: 10.11999/JEIT190321
Citation: Dan LU, Tianlin BAI. Global Navigation Satellite System Spoofing Mitigation Method by Utilizing Signal Reconstruction[J]. Journal of Electronics & Information Technology, 2020, 42(5): 1268-1273. doi: 10.11999/JEIT190321

利用信號(hào)重構(gòu)的全球?qū)Ш叫l(wèi)星系統(tǒng)欺騙干擾抑制方法

doi: 10.11999/JEIT190321 cstr: 32379.14.JEIT190321

  • 中國民航大學(xué)天津市智能信號(hào)與圖像處理重點(diǎn)實(shí)驗(yàn)室 天津 300300

詳細(xì)信息
    作者簡(jiǎn)介:

    盧丹：女，1978年生，副教授，主要研究方向?yàn)樾l(wèi)星導(dǎo)航抗干擾、陣列信號(hào)處理

    白天霖：男，1993年生，碩士生，研究方向?yàn)樾l(wèi)星導(dǎo)航抗干擾

    通訊作者:

    盧丹　dlu@cauc.edu.cn

  • 中圖分類號(hào): TN967.1

Global Navigation Satellite System Spoofing Mitigation Method by Utilizing Signal Reconstruction

  • Tianjin Key Laboratory for Advanced Signal Processing, Civil Aviation University of China, Tianjin 300300, China

  • 摘要:

    欺騙式干擾通過發(fā)射與真實(shí)衛(wèi)星信號(hào)相似的信號(hào)誤導(dǎo)接收機(jī)產(chǎn)生錯(cuò)誤的定位結(jié)果，具有極大的危害。該文針對(duì)轉(zhuǎn)發(fā)式欺騙干擾，提出一種基于信號(hào)重構(gòu)的單天線欺騙干擾抑制方法。該方法首先通過參數(shù)估計(jì)方法估計(jì)出欺騙信號(hào)載波頻率和碼相位，然后構(gòu)建欺騙信號(hào)子空間正交投影矩陣以抑制干擾。仿真實(shí)驗(yàn)結(jié)果表明該方法對(duì)欺騙干擾具有良好的抑制效果，能夠保障接收機(jī)在干擾環(huán)境中實(shí)現(xiàn)有效定位，并具有較低的運(yùn)算復(fù)雜度。

    Abstract:

    Spoofing misleads the receiver to generate the wrong position information by trans-mitting signals similar to authentic satellite signals, which has great harm. In this paper, a single-antenna spoofing mitigation algorithm based on signal reconstruction is proposed for meaconing. Firstly, the carrier frequency and code phase of spoofing signal are obtained by parameter estimation method, and then the orthogonal projection matrix of spoofing signal subspace is constructed to suppress spoofing. The simulation results show that the algorithm has a good suppression effect on spoofing and ensure the receiver can locate effectively in the interference environment, and the algorithm also has lower computational complexity.

    • HTML全文

  • 圖  1  欺騙干擾抑制算法流程圖

    圖  2  $\mu ,\Delta f$以及度$L$的關(guān)系曲線圖

    圖  3  PRN1的捕獲結(jié)果

    圖  4  真實(shí)衛(wèi)星信號(hào)定位結(jié)果

    圖  5  欺騙干擾抑制前后定位結(jié)果

    表  1  仿真參數(shù)

    星號(hào)中頻(MHz)采樣率(MHz)信噪比(dB)干噪比
    1 2 3 6 14 20 22 251.4055.714–20–15
    下載: 導(dǎo)出CSV

    表  2  兩種算法計(jì)算量比較

    乘法次數(shù)加法次數(shù)FFT計(jì)算次數(shù)時(shí)間復(fù)雜度
    文獻(xiàn)算法7QP+4Q2QP+3Q2QPO(QP)
    本文算法6QM+4M3QM+7MQ(M+1)+1O(QM)
    下載: 導(dǎo)出CSV

    表  3  算法計(jì)算時(shí)間隨衛(wèi)星個(gè)數(shù)變化表(s)

    衛(wèi)星數(shù)量456789101112
    文獻(xiàn)算法2.5072.5442.5672.5972.6412.6422.6892.6982.733
    本文算法0.2350.2680.2930.3130.3360.3550.3800.4020.421
    下載: 導(dǎo)出CSV
  • 吳仁彪, 王文益, 盧丹, 等. 衛(wèi)星導(dǎo)航自適應(yīng)抗干擾技術(shù)[M]. 北京: 科學(xué)出版社, 2015: 1–22.

    WU Renbiao, WANG Wenyi, LU Dan, et al. Adaptive Interference Mitigation in GNSS[M]. Beijing: Science Press, 2015: 1–22.
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    BROUMANDAN A, JAFARNIA-JAHROMI A, DANESHMAND S, et al. Overview of spatial processing approaches for GNSS structural interference detection and mitigation[J]. Proceedings of the IEEE, 2016, 104(6): 1246–1257. doi: 10.1109/JPROC.2016.2529600
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    DANESHMAND S, JAFARNIA-JAHROMI A, BROUMANDAN A, et al. A low-complexity GPS anti-spoofing method using a multi-antenna array[C]. The 25th International Technical Meeting of the Satellite Division of the Institute of Navigation, Nashville, USA, 2012: 1233–1243.
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出版歷程
  • 收稿日期:  2019-05-06
  • 修回日期:  2019-11-30
  • 網(wǎng)絡(luò)出版日期:  2019-12-17
  • 刊出日期:  2020-06-04

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