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Spatial Sampling Narrowband Signals with a Uniform Line Array
Автор: John Buck
Загружено: 2025-01-29
Просмотров: 537
Описание: This video explains how a uniform line array is sampling in space the same way that an analog-to-digital converter (ADC) sampling in time. This analogy lets us quickly work out that to avoid aliasing a narrowband signal, the uniform line array needs to have at least two sensors per wavelength, i.e., d must be less than lambda/2. Also, the finite aperture of the array is like multiplying by a rectangular window in space, which smears the spatial spectrum by convolution with a DT sinc function.
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