均匀圆阵微分约束的加宽零陷动态抗干扰方法
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摘要
为了提升载体动态场景下GNSS阵列天线的抗干扰性能,提出一种均匀圆阵下基于微分约束的加宽零陷动态抗干扰方法:通过建立信号模型给出该算法;并给出其求解加权矢量所需的一种来向估计方法。实验结果表明:该算法对于干扰来向的零陷具有加宽、加深以及平滑的作用;但存在会在随机方向引入伪零陷的问题。
In order to enhance the performance of anti-jamming for GNSS array antenna under the dynamic scenario of carriers, the paper proposed a method of null widening dynamic anti-jamming under differential constraints for uniform circular array: the algorithm was given by establishing signal models; and a direction-of-arrival estimation method for solving the weighted vectors of the algorithm was introduced. Experimental result showed that: the proposed method could widen, deepen and smooth the nulls of the jamming direction;however, there would exist pseudo nulls imported in random directions.
In order to enhance the performance of anti-jamming for GNSS array antenna under the dynamic scenario of carriers, the paper proposed a method of null widening dynamic anti-jamming under differential constraints for uniform circular array: the algorithm was given by establishing signal models; and a direction-of-arrival estimation method for solving the weighted vectors of the algorithm was introduced. Experimental result showed that: the proposed method could widen, deepen and smooth the nulls of the jamming direction;however, there would exist pseudo nulls imported in random directions.
引文
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[14]MOHAMED E A,TAN Z Z.Adaptive antenna utilizing power inversion and linearly constrained minimum variance algorithms[J].中国航空学报(英文版),2005,18(2):153-160.
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[16]REED I S,MALLETT J D,BRENNAN L E.Rapid convergence rate in adaptive arrays[J].IEEE Transactions on Aerospace&Electronic Systems,1974,AES-10(6):853-863.
[2]曾祥华,李敏,聂俊伟,等.卫星导航系统中平台运动对天线阵列性能的影响分析[J].国防科技大学学报,201133(1):95-99.
[3]HUNG E K L,TURNER R M.A fast beamforming algorithm for large arrays[J].IEEE Transactions on Aerospace&Electronic Systems,1983,AES-19(4):598-607.
[4]GERSHMAN A B,SEREBRYAKOV G V,BOHME J F.Constrained Hung-Turner adaptive beam-forming algorithm with additional robustness to wideband and moving jammers[J].IEEE Transactions on Antennas&Propagation,199644(3):361-367.
[5]GERSHMAN A B,NICKEL U,BOHME J F.Adaptive beamforming algorithms with robustness against jammer motion[J].IEEE Transactions on Signal Processing,1997,45(7):1878-1885.
[6]吴仁彪,卢丹,李婵.用于高动态GPS接收机的微分约束最小功率抗干扰算法[J].中国科学:信息科学,201141(8):968-977.
[7]MAILLOUX R J.Covariance matrix augmentation to produce adaptive array pattern thoughs[J].Electronics Letters1995,31(10):771-772.
[8]ZATMAN M.Production of adaptive array troughs by dispersion synthesis[J].Electronics Letters,1995,31(25):2141-2142.
[9]GUERCI J R.Theory and application of covariance matrix tapers for robust adaptive beamforming[J].IEEETransactions on Signal Processing,2002,47(4):977-985.
[10]李荣峰,王永良,万山虎.自适应天线方向图干扰零陷加宽方法研究[J].现代雷达,2003,25(2):42-45.
[11]卢丹.稳健的全球卫星导航系统抗干扰技术研究[D].西安:西安电子科技大学,2013.
[12]马艳欣.基于CMT的高动态GPS抗干扰算法研究[D].天津:中国民航大学,2014.
[13]ER M H.Adaptive antenna array under directional and spatial derivative constraints[J].IEEE Proceedings H-Microwaves Antennas and Propagation,1988,l35(6):414-419.
[14]MOHAMED E A,TAN Z Z.Adaptive antenna utilizing power inversion and linearly constrained minimum variance algorithms[J].中国航空学报(英文版),2005,18(2):153-160.
[15]ZATMAN M,GUERCI J R.Comments on“theory and application of covariance matrix tapers for robust adaptive beamforming”[with reply][J].IEEE Transactions on Signal Processing,2000,48(6):1796-1800.
[16]REED I S,MALLETT J D,BRENNAN L E.Rapid convergence rate in adaptive arrays[J].IEEE Transactions on Aerospace&Electronic Systems,1974,AES-10(6):853-863.