矢量跟踪技术是卫星导航领域的关键技术之一。随着欺骗干扰对卫星导航安全的威胁日益严峻，研究欺骗干扰对矢量接收机的影响对于提高矢量跟踪技术抗欺骗干扰能力有重要意义。该文研究了欺骗干扰对3种典型矢量跟踪环路的影响，推导了欺骗干扰引起的跟踪误差均值，建立了环路失锁条件的表达式，并利用信号源模拟器和软件接收机对分析结果进行了验证。研究结果表明，欺骗干扰能够导致非零均值的信号跟踪误差，降低环路的跟踪性能，甚至引起环路失锁。矢量接收机可以根据该特性进行反欺骗。
Vector tracking technology is one of the key technologies of satellite navigation. As the threat of spoofing interference to satellite navigation security is increasing enormously, the influence of spoofing interference on vector receivers must be better understood to improve the anti-spoofing capability of vector tracking technology. This paper focuses on the influence of spoofing interference on three typical vector tracking loops. This study derives the mean tracking error caused by spoofing interference and the loss of lock conditions in the tracking loops. The analysis results were verified using a signal source simulator and a software receiver. The results show that spoofing interference can lead to non-zero mean tracking errors, reduce loop tracking accuracy, and even cause loop lock loses. Vector receivers can use this feature to improve anti-spoofing abilities.
[1] LASHLEY M, BEVLY D M. Comparison of traditional tracking loops and vector based tracking loops for weak GPS signals[C]//Proceedings of the 2008 International Technical Meeting of The Institute of Navigation. San Diego, USA:Institute of Navigation, 2008:310-316.
[2] WANG Q, CUI X W, LIU J, et al. Quantitative analysis of the performance of vector tracking algorithms[J]. High Technology Letters, 2017, 23(3):238-244.
[3] LASHLEY M, BEVLY D M, HUNG J Y. Performance analysis of vector tracking algorithms for weak GPS signals in high dynamics[J]. IEEE Journal of Selected Topics in Signal Processing, 2009, 3(4):661-673.
[4] LI K, ZHAO J X, WANG X Y, et al. Federated ultra-tightly coupled GPS/INS integrated navigation system based on vector tracking for severe jamming environment[J]. IET Radar Sonar & Navigation, 2016, 10(6):1030-1037.
[5] 刘婧, 崔晓伟, 陆明泉, 等. 标量和矢量架构下GNSS接收机多径抑制性能比较[J]. 清华大学学报(自然科学版), 2013, 53(7):961-966. LIU J, CUI X W, LU M Q, et al. Multipath rejection performance comparison of GNSS receivers using scalar and vector architectures[J]. Journal of Tsinghua University (Science and Technology), 2013, 53(7):961-966. (in Chinese)
[6] 张瑞华. 基于阵列天线的GNSS矢量接收机抗干扰算法研究[D]. 天津:中国民航大学, 2018. ZHANG R H. Interference mitigation in GNSS vector tracking receiver based on array antenna[D]. Tianjin:Civil Aviation University of China, 2018. (in Chinese)
[7] SCHMIDT D, RADKE K, CAMTEPE S, et al. A survey and analysis of the GNSS spoofing threat and countermeasures[J]. ACM Computing Surveys, 2016, 48(4):1-31.
[8] DIETMAYER K, KUNZI F, GARZIA F, et al. Real time results of vector delay lock loop in a light urban scenario[C]//Proceedings of 2020 IEEE/ION Position, Location and Navigation Symposium. Portland, USA:IEEE, 2020:1230-1236.
[9] LI H, YANG J S, CUI C. High dynamic GPS signals tracking based on vector frequency lock loop[J]. Journal of System Simulation, 2012, 24(4):873-881.
[10] TANG Z R, TANG X M, LIN H L, et al. Improvement of the carrier phase based on vector frequency locked loop with the phase locked loop assisted[C]//Proceedings of the 4th International Conference on Mechanical, Control and Computer Engineering. Hohhot, China:IEEE, 2019:34-38.
[11] TAO H Q, WU H L, LI H, et al. GNSS spoofing detection based on consistency check of velocities[J]. Chinese Journal of Electronics, 2019, 28(2):437-444.
[12] SUN C, CHEONG J W, DEMPSTER A G, et al. Moving variance-based signal quality monitoring method for spoofing detection[J]. GPS Solutions, 2018, 22(3):1-13.
[13] CUNTZ M, KONOVALTSEV A, MEURER M. Concepts, development, and validation of multiantenna GNSS receivers for resilient navigation[J]. Proceedings of the IEEE, 2016, 104(6):1288-1301.
[14] KAPLAN E D, HEGARTY C. Understanding GPS:Principles and applications[M]. 2nd ed. Boston, USA:Artech House Publishers, 2006.
[15] SIMON M K. Probability distributions involving Gaussian random variables:A handbook for engineers and scientists[M]. Holland:Kluwer Academic Publishers, 2006.
[16] HUMPHREYS T E, LEDVINA B M, PSIAKI M L. Assessing the spoofing threat:Development of a portable GPS civilian spoofer[C]//Proceedings of the 21st International Technical Meeting of the Satellite Division of The Institute of Navigation. Savannah, USA:Institute of Navigation, 2008:2314-2325.
