基于盲源分离的自适应抗干扰算法研究
|
摘要
在卫星导航系统遇到的干扰中,一般分为压制式干扰和转发式干扰。压制式干扰远大于卫星信号,采用功率倒置算法就可以形成所需的零陷;转发式干扰的信号强度可以与卫星信号相比拟,要在干扰位置处形成零陷存在一系列困难。在干扰信号与有用信号相比拟的情况下,提出将快速独立分量分析算法(fast independent component analysis,FastICA)结合自适应抗干扰算法对干扰进行抑制,自适应算法采用波达方向估计(DOA)算法及基于DOA的波束形成算法,该方法能在干扰与有用信号比拟的情况下,对干扰进行有效抑制,计算机仿真结果也证明了该方法的有效性。为导航系统中有效抑制弱干扰提供了一种新思路。
Generally,there are suppress jamming and forward jamming in the satellite navigation system.Since suppress jamming is much stronger than the satellite signal,using the power inversion algorithm can form the required nulling.Because the strength of forward jamming can be compared with the satellite signals,there are a series of difficulties in forming nulling of interference.The paper studies the situation when the useful signal and jamming signal power are almost the same,and employs fast independent component algorithm(FastICA)combining with direction of arrival(DOA)and beam-forming algorithm to control the interference.With the simulation result,we confirm the feasibility of the proposed method which brings a new thinking to the anti-jamming weak signals.
Generally,there are suppress jamming and forward jamming in the satellite navigation system.Since suppress jamming is much stronger than the satellite signal,using the power inversion algorithm can form the required nulling.Because the strength of forward jamming can be compared with the satellite signals,there are a series of difficulties in forming nulling of interference.The paper studies the situation when the useful signal and jamming signal power are almost the same,and employs fast independent component algorithm(FastICA)combining with direction of arrival(DOA)and beam-forming algorithm to control the interference.With the simulation result,we confirm the feasibility of the proposed method which brings a new thinking to the anti-jamming weak signals.
引文
[1]朱莉,张国权,王光明.基于均匀圆阵相干信源DOA估计的改进MUSIC算法[J].上海航天,2009,26(1):31-33.ZHU Li,ZHANG Guoquan,WANG Guangming.DOA esti mation of coherent signals based on UCAwith i mproved MUSIC algorthm[J].Journal ofShanghai Aerospace,2009,26(1):31-33.(in Chi-nese)
[2]SMON H.Adaptive Filter Theory[M].北京:北京航空航天大学出版社,2003.SMON H.A daptive Filter Theory[M].Beijing:Bei-jing University of Aeronautics and Astronautics press,2003.(in Chinese)
[3]SCH MIDT R O.Multiple emitter location and signalparameter esti mation[J].IEEE Trans on AP,1986,34(3):276-280.
[4]ROY R,KAILATH T.ESPRIT-esti mation of signalparameters via rotationl invariance techniques[J].IEEE Trans on ASSP,1989,37(7):984-995.
[5]武思军.稳健的自适应波束形成算法研究[D].哈尔滨工程大学,2005.WU Sijun.The Study of Robust Adaptive Beamform-ing Algorithms[D].Harbin Engineering University,2005.(in Chinese)
[6]郑洪.MUSIC算法与波达方向估计研究[D].四川大学,2005.ZHENG Hong.Study on MUSICand DOA Esti mationAlgorithm[D].Sichuan University,2005.(in Chi-nese)
[7]杨鹏,杨峰,聂在平,等.MUSIC算法在柱面共形天线阵DOA估计中的应用研究[J].电波科学学报,2008,23(2):288-291.YANG Peng,YANG Feng,NIE Zaiping,et al.DOAesti mation of cylindrical conformal array by MUSIC[J].Chinese Journal of Radio Science,2008,23(2):288-291.(in Chinese)
[8]张贤达,保铮.通信信号处理[M].1版.北京:国防工业出版社,2000.ZHANG Xianda,BAO Zheng.Communication SignalProcessing[M].1st ed.Beijing.National Defence In-dustry Press,2000.(in Chinese)
[9]余志斌,金炜东,张葛祥.基于峰度的盲源分离算法研究与应用[J].电波科学学报,2008,23(1):146-152.YU Zhibin,JIN Weidong,ZHANG Gexiang.Re-search and applications of blind signal separation basedon kurtosis[J].Chinese Journal of Radio Science,2008,23(1):146-152.(in Chinese)
[10]任光龙,李鸿燕.基于小波变换和FASTICA算法的有噪混合图像盲分离[J].太原理工大学学报,2009,40(3):229-231+239.REN Guang-long,Li Hongyan.The Separation ofNoisy Mixed I mage Based on Wavelet TransformandIndependent Component Analysis[J].Journal ofTaiyuan University of Technology.2009,40(3):229-231+239.(in Chinese)
[11]HYVARINEN A,OJA E.Afast fixrd-point algo-rithmfor independent component anlysis[J].NeuralComputation,1997,9(7):1483-1492.
[12]黄丽妍,高强,亢海燕,等.改进的快速独立分量分析算法[J].华北电力大学学报,2006,33(3):59-62.HUANG Liyan,GAO Qiang,KANG Haiyan,et al.I mproved fastICA algorthm[J].Journal of NorthChina Electric Power University,2006,33(3):59-62.(in Chinese)
[13]孙正鼐,肖芳,张虹.一种基于FastICA的波达方向估计新方法[J].计算机应用,2006,27(6):1509-1512.SUN Zhengnai,XIAO Fang,ZHANG Hong.Newmethod for esti mation of DOA based on FastICA[J].Journal of computer application,2006,27(6):1509-1512.(in Chinese)
[14]王丽娜,王兵,周贤伟.一种新的智能天线波束形成算法[J].电波科学学报,2007,22(2):351-354.WANG Lina,WANG Bing,ZHOU Xianwei.A no-vel beamforming algorithmof smart antenna[J].Chi-nese Journal of Radio Science,2007,22(2):351-354.(in Chinese)
[15]王健,惠晓威.DOA估计中MVDR算法的研究与实现[J].科技信息,2007,26(35):84-85.WANG Jian,HUI Xiaowei.The study and i mple-mentation of MVDR algorithm in DOA esti mation[J].Science Technology Information,2007,26(35):84-85.(in Chinese)
[16]庄学彬,崔晓伟,陆明泉,等.干扰环境下用于GPS接收机的波束形成算法分析[J].系统工程与电子技术,2009,31(3):570-574.ZHUANG Xuebin,CUI Xiaowei,LU Mingquan,etal.Analysis of beamforming algorithms for GPS re-ceivers in the jamming environment[J].Systems En-gineering and Electronics,2009,31(3):570-574.(in Chinese)
[17]张念,刘天佑,李杰.FastICA算法及其在地震信号去噪中的应用[J].计算机应用研究,2009,26(4):1432-1434.ZHANG Nian,LI U Tianyou,LI Jie.FastICA algo-rithmand its applicationin seismic signal noise eli mi-nation[J].Application Research Of Computers,2009,26(4):1432-1434.(in Chinese)
[2]SMON H.Adaptive Filter Theory[M].北京:北京航空航天大学出版社,2003.SMON H.A daptive Filter Theory[M].Beijing:Bei-jing University of Aeronautics and Astronautics press,2003.(in Chinese)
[3]SCH MIDT R O.Multiple emitter location and signalparameter esti mation[J].IEEE Trans on AP,1986,34(3):276-280.
[4]ROY R,KAILATH T.ESPRIT-esti mation of signalparameters via rotationl invariance techniques[J].IEEE Trans on ASSP,1989,37(7):984-995.
[5]武思军.稳健的自适应波束形成算法研究[D].哈尔滨工程大学,2005.WU Sijun.The Study of Robust Adaptive Beamform-ing Algorithms[D].Harbin Engineering University,2005.(in Chinese)
[6]郑洪.MUSIC算法与波达方向估计研究[D].四川大学,2005.ZHENG Hong.Study on MUSICand DOA Esti mationAlgorithm[D].Sichuan University,2005.(in Chi-nese)
[7]杨鹏,杨峰,聂在平,等.MUSIC算法在柱面共形天线阵DOA估计中的应用研究[J].电波科学学报,2008,23(2):288-291.YANG Peng,YANG Feng,NIE Zaiping,et al.DOAesti mation of cylindrical conformal array by MUSIC[J].Chinese Journal of Radio Science,2008,23(2):288-291.(in Chinese)
[8]张贤达,保铮.通信信号处理[M].1版.北京:国防工业出版社,2000.ZHANG Xianda,BAO Zheng.Communication SignalProcessing[M].1st ed.Beijing.National Defence In-dustry Press,2000.(in Chinese)
[9]余志斌,金炜东,张葛祥.基于峰度的盲源分离算法研究与应用[J].电波科学学报,2008,23(1):146-152.YU Zhibin,JIN Weidong,ZHANG Gexiang.Re-search and applications of blind signal separation basedon kurtosis[J].Chinese Journal of Radio Science,2008,23(1):146-152.(in Chinese)
[10]任光龙,李鸿燕.基于小波变换和FASTICA算法的有噪混合图像盲分离[J].太原理工大学学报,2009,40(3):229-231+239.REN Guang-long,Li Hongyan.The Separation ofNoisy Mixed I mage Based on Wavelet TransformandIndependent Component Analysis[J].Journal ofTaiyuan University of Technology.2009,40(3):229-231+239.(in Chinese)
[11]HYVARINEN A,OJA E.Afast fixrd-point algo-rithmfor independent component anlysis[J].NeuralComputation,1997,9(7):1483-1492.
[12]黄丽妍,高强,亢海燕,等.改进的快速独立分量分析算法[J].华北电力大学学报,2006,33(3):59-62.HUANG Liyan,GAO Qiang,KANG Haiyan,et al.I mproved fastICA algorthm[J].Journal of NorthChina Electric Power University,2006,33(3):59-62.(in Chinese)
[13]孙正鼐,肖芳,张虹.一种基于FastICA的波达方向估计新方法[J].计算机应用,2006,27(6):1509-1512.SUN Zhengnai,XIAO Fang,ZHANG Hong.Newmethod for esti mation of DOA based on FastICA[J].Journal of computer application,2006,27(6):1509-1512.(in Chinese)
[14]王丽娜,王兵,周贤伟.一种新的智能天线波束形成算法[J].电波科学学报,2007,22(2):351-354.WANG Lina,WANG Bing,ZHOU Xianwei.A no-vel beamforming algorithmof smart antenna[J].Chi-nese Journal of Radio Science,2007,22(2):351-354.(in Chinese)
[15]王健,惠晓威.DOA估计中MVDR算法的研究与实现[J].科技信息,2007,26(35):84-85.WANG Jian,HUI Xiaowei.The study and i mple-mentation of MVDR algorithm in DOA esti mation[J].Science Technology Information,2007,26(35):84-85.(in Chinese)
[16]庄学彬,崔晓伟,陆明泉,等.干扰环境下用于GPS接收机的波束形成算法分析[J].系统工程与电子技术,2009,31(3):570-574.ZHUANG Xuebin,CUI Xiaowei,LU Mingquan,etal.Analysis of beamforming algorithms for GPS re-ceivers in the jamming environment[J].Systems En-gineering and Electronics,2009,31(3):570-574.(in Chinese)
[17]张念,刘天佑,李杰.FastICA算法及其在地震信号去噪中的应用[J].计算机应用研究,2009,26(4):1432-1434.ZHANG Nian,LI U Tianyou,LI Jie.FastICA algo-rithmand its applicationin seismic signal noise eli mi-nation[J].Application Research Of Computers,2009,26(4):1432-1434.(in Chinese)
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心