Influence of inconsistence of GNSS anti-jamming antenna array on MUSIC algorithm
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摘要: 由于天线阵元位置、射频(RF)放大器和模数转换器(ADC)等因素的影响,全球卫星导航系统(GNSS)抗干扰天线阵各通道间不可避免地存在着不一致性。首先,利用矩阵中的子空间理论分析了通道的幅度不一致性和相位不一致性对多重信号分类(MUSIC)算法的影响。理论分析结果表明:单干扰情况下通道幅度不一致性会降低MUSIC算法方向图的零陷深度,但不影响零陷位置,相位不一致性对MUSIC算法方向图零陷位置和零陷深度均有影响;多干扰情况下通道幅度不一致性和相位不一致性对MUSIC算法方向图零陷位置零陷和深度都有影响。因此在通道不一致性慢变化的条件下,MUSIC算法利用方向图进行性能评估时需要测出通道幅相偏差矩阵进行方向图纠正。然后,利用仿真的方法对不一致性的影响进行了实验分析,实验分析结果与理论分析结果一致。
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关键词:
- 通道不一致性 /
- 多重信号分类(MUSIC)算法 /
- 全球卫星导航系统(GNSS) /
- 抗干扰 /
- 方向图
Abstract: Suffering from the errors of antenna array elements such as radio frequency (RF) amplifier and analog to digital converter (ADC), global navigation satellite system (GNSS) anti-jamming antenna array has channel inconsistence inevitably. Firstly, the influences of the amplitude and phase inconsistence of channel on multiple signal classfication (MUSIC) anti-jamming algorithm are analyzed with the subspace theory of matrix. Theoretical analyses and experimental results indicate that in the case of single interference, the amplitude inconsistence decreases the nulling depth of antenna array pattern generated by MUSIC algorithm, but does not influence the nulling direction, while the phase inconsistence affects both the nulling depth and direction of the antenna array pattern. In the case of multiple interferences, the amplitude inconsistence influences both the depth and direction of nulling in antenna array pattern; the phase inconsistence of channel influences both the depth and direction of nulling in antenna array pattern of MUSIC algorithm. When the channel inconsistence changes slowly, before using array pattern to evaluate the performance of the MUSIC algorithm, the array pattern should be calibrated by measuring the deviation matrix of the channel amplitude and phase. Then, the experimental analyses on the influences of the inconsistence are carried out by simulation, and the results of the experimental analyses are consistent with those of the theoretical analyses. -
[1] COMPTON R,HUFF R,SWARNER W,et al.The power-inversion adaptive array:Concept and performance[J].IEEE Transactions on Aerospace and Electronic Systems,1979,AES-15(6):803-814. [2] BEHAR V,KABAKCHIEV C,ROHLING H.MVDR radar signal processing approach for jamming suppression in satellite navigation receivers[C]//11th International Radar Symposium (IRS).Piscataway,NJ:IEEE Press,2010:1-4. [3] JOHNSON J R,FENN A J,AUMANN H M,et al.An experimental adaptive nulling receiver utilizing the sample matrix inversion algorithm with channel equalization[J].IEEE Transactions on Microwave Theory and Techniques,1991,39(5):798-808. [4] FINN A M,GRIFFIN M F.Radar adaptive beamforming algorithms and architectures[C]//Proceedings of IEEE 9th Digital Avionics Systems Conference.Piscataway,NJ:IEEE Press,1990:194-199. [5] SCHMIDT R O.Multiple emitter location and signal parameter estimation[J].IEEE Transactions on Antennas and Propagation,1986,34(3):276-280. [6] LU Y E,YANG J,DING Z M,et al.The orthogonal weighted algorithm for GPS receiver anti-jamming[C]//Proceedings of 2001 CIE International Conference on Radar.Piscataway,NJ:IEEE Press,2001:1190-1194. [7] MOHAMED E A,王永芳,谈展中.用于GPS接收机的自适应算法抗干扰性能比较[J].北京航空航天大学学报,2006,32(5):561-565.MOHAMED E A,WANG Y F,TAN Z Z.Comparison between adaptive algorithms using in GPS receiver[J].Journal of Beijing University of Aeronautics and Astronautics,2006,32(5):561-565(in Chinese). [8] AMIN M G,SUN W.A novel interference suppression scheme for global navigation satellite systems using antenna array[J].IEEE Journal on Selected Areas in Communications,2005,23(5):999-1012. [9] 李苗,吕善伟,薛明华,等.考虑互耦和激励误差时智能天线波束形成[J].北京航空航天大学学报,2004,30(8):732-734.LI M,LÜ S W,XUE M H,et al.Performance of smart antenna when coupling and excitation error are considered[J].Journal of Beijing University of Aeronautics and Astronautics,2004,30(8):732-734(in Chinese). [10] STEINBERG B D.Principles of aperture and array system design[M].New York:John Wiley & Sons,1976:139-168. [11] QUAZI A H.Array beam response in the presence of amplitude and phase fluctuations[J].The Journal of the Acoustical Society of America,1982,72(1):171-180. [12] SU W M,NI J L,LIU G S,et al.A performance analysis of the MUSIC algorithm in the presence of channel mismatch[C]//3rd International Conference on Signal Processing.Piscataway,NJ:IEEE Press,1996:221-224. [13] 张建军,项建弘.通道不一致性对GPS天线自适应算法的影响[J].无线电工程,2010(2):35-38.ZHANG J J,XIANG J H.Influences of channel mismatch on GPS adaptive algorithm[J].Radio Engineering,2010(2):35-38(in Chinese). [14] WANG L,LI Y L,XU S B,et al.Robustness analysis of adaptive anti-jamming algorithms with channel mismatch and mutual coupling for GNSS systems[C]//IEEE International Conference on Signal Processing,Communication and Computing.Piscataway,NJ:IEEE Press,2012:705-710. [15] GAO F,WANG Y L,CHEN H,et al.Effect of channel mismatch on STAP performance[C]//CISP'08 Congress on Image and Signal Processing.Piscataway,NJ:IEEE Press,2008:85-89. [16] AALFS D D,HOLDER E J.Impact of wideband channel-to-channel mismatch on adaptive arrays[C]//Sensor Array and Multichannel Signal Processing Workshop.Piscataway,NJ:IEEE Press,2000:459-463. [17] 饶蓉.基于圆形天线阵的阵列校准方法与实现[D].武汉:华中科技大学,2013:45-56.RAO R.The method and implementation of array calibration on circular-antenna array[D].Wuhan:Huazhong University of Science and Technology,2013:45-56(in Chinese). [18] 申秋明.数字阵列雷达接收通道均衡技术研究与实现[D].成都:电子科技大学,2005:12-20.SHEN Q M.Research and implementation of channel equalization technology on digital array radar receiver[D].Chengdu:University of Electronic Science and Technology of China,2013:12-20(in Chinese). [19] 陈静静.阵列幅相误差校正及实现研究[D].南京:南京理工大学,2014:23-29.CHEN J J.Research on antenna array amplitude and phase error calibration[D].Nanjing:Nanjing University of Science and Technology,2014:23-29(in Chinese).
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