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Mismatched filtering of periodic and odd-periodic binary arrays

机译:周期和奇周期二进制数组的不匹配过滤

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摘要

Arrays with good correlation properties are required for coded-aperture imaging, as well as for other applications of two-dimensional signal processing. Since binary arrays with perfect periodic autocor-relation functions exist for only a few sizes, mismatched filtering is discussed. Mismatched filtering entirely suppresses any sidelobes of the periodic autocorrelation function at the expense of a slightly reduced signal-to-noise ratio. New construction methods for binary arrays are presented for which this loss, with respect to periodic or odd-periodic correlation, converges to zero with an increasing array size.
机译:编码孔径成像以及二维信号处理的其他应用都需要具有良好相关性的阵列。由于具有完善的周期性自相关函数的二进制数组仅存在几种大小,因此讨论了失配滤波。不匹配的滤波会完全抑制周期性自相关函数的任何旁瓣,但会以略微降低的信噪比为代价。提出了用于二进制阵列的新的构造方法,对于该阵列,关于周期或奇周期相关性的这种损失随着阵列尺寸的增大而收敛为零。

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