有效的宽带宽角发射干扰置零新方法
Efficient Wideband Jammer Nulling in Large Scanning Angle
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摘要: 相控阵雷达采用宽带技术是雷达发展的必然趋势。而抗宽带干扰技术是宽带相控阵雷达必须解决的问题，该文针对发射信号为线性调频信号，提出了一种宽带宽角发射波束形成新方法。该算法在已精确估计出信号和干扰方向的前提下，把窄带权和宽带权相结合形成最优权。该方法能在保证距离高分辨特性的前提下，在干扰方向形成较宽凹口，文中给出了实现框图并仿真证实了该方法的有效性。
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关键词:
- 线性调频;宽带雷达;波束形成;置零
Abstract: Phased array radar combined with wideband technique is the development trend in radar, while technology of restraining wideband interference must be resolved in wideband phased array radar. A new wideband transmitting beamforming method is presented in this paper which uses LFM signal. The algorithm produces optimal weight by combining wideband with narrowband weight on the premise of accurate DOA estimation. The method can ensure high distance resolution of the signal and form pattern null in the direction of the interference. Simulation results demonstrate the effectiveness of the method. -
张光义.相控雷达系统[M].北京:国防工业出版社,1997.[2]罗永健,俞根苗,张守宏,等.基于确知波形的宽带宽角相控阵发射波束形成方法.电子学报,2003,31(3):358-360.[3]Frost O L. An algorithm for linearly constrained adaptive array processing[J].Proc. IEEE.1972, 60(8):926-[4]Zhang M, Er M H. Robust adaptive beamforming for broadband arrays[J].Circuits systems and signal processing.1997, 16(2):207-[5]Affes S. Wideband robust adaptive beamforming via target tracking. Proc. of the 7th IEEE SP Workshop on SSAP, Quebec City, Canada, 1994:141 - 145.[6]Torres J A, David R M, Davis J, et al.. Efficient wideband jammernulling when using stretch processing. IEEE Trans. on AES, 2000,36(4): 1167- 1178.[7]李荣锋,王永良,万山虎.自适应天线方向图干扰零陷加宽方法研究.现代雷达,2003,25(2):42-45.[8]Guerci J R. Theory and application of covariance matrix tapers for robust adaptive beamforming[J].IEEE Trans. on SP.1999, 47(4):977- -
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