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[交流] 复合高斯噪声的定义为什么用speckle和spiky两个单词

The compound-Gaussian clutter model can be deemed as the product of two mutually independent processes: a complex, zero-mean, possibly correlated Gaussian process ,also referred to as speckle, times a real, nonegative , spiky component, which exhibits much longer decorrelation time than the former.
对于文字没什么不解的,单单就是为什么用speckle和spiky也就是“斑点”“钉状”两个词来类比两个部分,这里面有什么典故?
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