BS ISO 17208-1:2016规定了使用的一般测量系统、程序和方法 用于在规定的操作条件下测量船舶发出的水下声音。的确如此 不指定或提供水下噪声标准指南，或解决噪声的潜在影响 关于海洋生物。结果量基于本文使用的均方根声压级（SPL） 与在船舶远场测量的声压级或SPL同义，并进行归一化 距离为1米，报告为三分之一倍频程（见4.3）。在ISO 17208的本部分中 这些测量的结果称为“辐射噪声级”。水下声压级 在几何远场中进行测量，然后调整到1米的标准化距离 用于与适当的水下噪声标准进行比较。ISO 17208中的任何一部分均适用于所有在航的载人船舶 无人驾驶。不适用于水下船舶或飞机。这种方法没有固有的缺陷 对最小或最大船舶尺寸的限制。它仅限于以不超过以下速度通过的船舶 50千牛（25.7米/秒）。该测量方法平滑了由劳埃德镜面图像相干性引起的可变性 效果，但不排除传播效果（如底部反射）的可能影响， 折射和吸收。中没有提供这些影响的具体计算调整 这是ISO 17208的一部分。使用ISO 17208的这一部分不需要特定的海洋位置，但 提供了海洋试验场地的要求。 ISO 17208本部分所述方法的预期用途是:证明符合 合同要求或标准，用于将一艘船与另一艘船进行比较，以便定期 特征评估，以及研究和开发。预期用户包括政府 机构、研究船运营商和商业船东。使用该测量方法获得的数据需要额外的后处理 用于确定船舶源水平，以进行远场噪声预测，如 大多数环境影响研究或用于创建水下噪声等高线图。交叉引用:ISO 18405IEC 6056IEC 61260ISO/IEC指南98-3ISO 11202:2010ISO 18431-2ANSI/ASA S12。64-2009/第1部分购买本文件时可获得的所有现行修订均包含在购买本文件中。

BS ISO 17208-1:2016 specifies the general measurement system, procedure, and methodology used for the measurement of underwater sound from ships under a prescribed operating condition. It does not specify or provide guidance on underwater noise criteria or address the potential effects of noise on marine organisms.The resulting quantities are based on the root-mean-square sound pressure levels (SPL), herein used synonymously with sound pressure level or SPL measured in the far field of the ship and normalized to a distance of 1 m and reported in one-third octave bands (see 4.3). In this part of ISO 17208, the result of these measurements is called "radiated noise level". The underwater sound pressure level measurement is performed in the geometric far field and then adjusted to the 1 m normalized distance for use in comparison with appropriate underwater noise criteria.This part of ISO 17208 is applicable to any and all underway surface vessels, either manned or unmanned. It is not applicable to submerged vessels or to aircraft. The method has no inherent limitation on minimum or maximum ship size. It is limited to ships transiting at speeds no greater than 50 kn (25,7 m/s).The measurement method smooths the variability caused by Lloyd's mirror surface image coherence effects, but does not exclude a possible influence of propagation effects like bottom reflections, refraction and absorption. No specific computational adjustments for these effects are provided in this part of ISO 17208. A specific ocean location is not required to use this part of ISO 17208, but the requirements for an ocean test site are provided.The intended uses of the method described in this part of ISO 17208 are: to show compliance with contract requirements or criteria, for comparison of one ship to another ship, to enable periodic signature assessments, and for research and development. The intended users include government agencies, research vessel operators, and commercial ship owners.Additional post-processing would be required to use the data obtained from this measurement method for determination of the ship source levels to perform far field noise predictions such as needed for most environmental impact studies or for creating underwater noise contour maps.Cross References:ISO 18405IEC 60565IEC 61260ISO/IEC Guide 98-3ISO 11202:2010ISO 18431-2ANSI/ASA S12.64-2009/Part 1All current amendments available at time of purchase are included with the purchase of this document.