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四阶累积量阵列扩展的传播算子测向方法

Keywords: 方位估计, 阵列扩展, 传播算子算法, 四阶累积量??

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Abstract:

针对MUSIC??LIKE方法中累积量矩阵存在大量冗余数据的问题,提出了一种四阶累积量与最小冗余线阵相结合的传播算子测向方法.分析了四阶累积量进行阵列扩展的原理,通过将四阶累积量应用于最小冗余线阵,摒弃了原MUSIC??LIKE方法应用于均匀线阵中的大量冗余数据,并且获得了比MUSIC??LIKE更大的阵列扩展能力,同时结合传播算子方法,用线性运算代替特征分解求得噪声子空间,减小了计算量,缩短运算时间.论证了四阶累积量适用于最小冗余线阵及传播算子方法的原理,仿真实验验证了其在阵列扩展、测向性能及计算量的优越性.

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