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声学 描述船舶水下噪声的量及其测量方法 第1部分:用于比对目的的深水精密测量要求 Acoustics—Quantities and procedures for description and measurement of underwater sound from ships—Part 1: Requirements for precision measurements in deep water used for comparison purposes
发布日期: 2022-03-09
实施日期: 2022-10-01
本文件规定了在指定操作条件下,进行船舶水下辐射噪声测量的通用测量系统测量步骤和测量方 法。本文件并不规定水下噪声限值或为其提供指南,也不阐述水下噪声对海洋生物的潜在影响。 测量量值的结果以均方根声压级(SPL)给出,因此,可等同使用在船舶水下远场测得的声压级或 SPL,并归一化至1m距离处后,以1/3倍频程带宽给出的测量结果(见4.3)。本文件中,这些测量结果 用“辐射噪声级”表示。声压级是在几何远场中进行测量的,然后归一化至1m距离处,以便与相应的 水下噪声限值进行比对
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