The results show that, the proposed method can satisfy the requirements from the aspects of background noise suppression, normal range values on the target and edge-preservation.

实验结果表明，采用该方法，能够满足距离像背景噪声抑制、目标上距离值正常和边缘保持三方面要求。

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In order to evaluate results of pretreatment, two definitions of signal-to-noise ratio and background suppression factor were given.

为了评价预处理结果，定义了两个评价参数——信噪比和背景抑制因子。

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