“Dirty Beam”的概念、定义、习题解题方法及翻译-数学辞典

单词

Dirty Beam

释义

Dirty Beam

The Fourier Transform of the sampling distribution in synthesis imaging

(1)

also called the Synthesized Beam. It is called a ``beam'' by way of analogy with the Dirty Map


			(2)

where

denotes Convolution. Here,

is the intensity which would be observed for an extended source by anantenna with response pattern

(3)

The dirty beam is often a complicated function. In order to avoid introducing any high spatial frequency features whenCLEANing, an elliptical Gaussian is usually fit to the dirty beam, producing a CLEANBeam which is Convolved with the final iteration.

See also CLEAN Algorithm, CLEAN Map, Dirty Map

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