基于VLMS算法的空域和空时滤波在GNSS抗干扰中的性能研究  

Research on Performance of Spatial Domain and STAP Algorithm Based on VLMS in GNSS Anti-jamming

作　　者：王顿[1] 卢艳娥[1] 严玉国[1] 裴文林[1] 

机构地区：[1]空军工程大学信息与导航学院,西安710077

出　　处：《科学技术与工程》2013年第14期3890-3895,共6页Science Technology and Engineering

摘　　要：针对空域滤波性能严格受限于天线自由度的缺点,研究了空时自适应滤波技术,建立了基于VLMS(Variable LeastMean Square)算法下的两种信号处理模型,并加以仿真验证比对。仿真结果表明STAP(Space-time Adaptive Processing)算法性能优于空域滤波算法,在不增加天线阵元的情况下,提高了自由度,能抑制多种强干扰,输出信噪比均高于空域滤波算法。According to the the existing traps in spatial domain filter performance is limited to degrees of free- dom, space-time adaptive processing （STAP） is studied and two signal processing models are built based on varia- ble-step least mean square （VLMS） and simulates to verify at last. The simulations reveal that STAP algorithm is superior to another and can arise degrees of freedom under the condition without nectling to increase array units, and restrain multiple strong jamming. And the output signal-noise ratio （SNR） is higher than that of spatial domain algorithm.

关 键 词：空域滤波 空时自适应处理 天线自由度 信噪比 

分 类 号：TN978[电子电信—信号与信息处理]