| 摘要 |
Disclosed is a method and apparatus of creating a virtual beam in a desired beam direction from an array of analog signal components. Preferably, a random number generator provides a random sequence of indices of said array and provides an associated sequence of time delays, the random sequence of indices including specific statistical properties. A multiplexer selects individual analog signal components of said array in a sequence based on the specific statistical properties. An analog to digital converter digitizes the analog signal components of said array to generate an aggregate digital signal comprising digital signal components to provide the single sequence of sampled digital signal components. An alignment unit provides a time alignment between the digital signal components, according to the random sequence of delays and indices. A down-filter filters the time aligned signal components for selecting a desired signal frequency band and eliminating noise outside the band.
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