+AMD1:2025 CSV 确定30 MHz至6 GHz无线通信设备对人体峰值空间平均比吸收率（SAR）的方法 第2部分：车载天线暴露有限差分时域（FDTD）建模的特殊要求

[中文适用范围]： IEC/IEEE 62704-2:2017+A1:2025规定了在30 MHz至1 GHz频率范围内，使用有限差分时域技术（FDTD）确定暴露于车辆安装天线所产生的电磁场下的标准化人体解剖模型中峰值空间平均和全身平均比吸收率（SAR）时所涉及的概念、技术、验证程序、不确定性和局限性。该范围涵盖了典型的高功率移动无线电产品和应用。本文件规定并提供了测试车辆、人体模型及其通用基准数据。它定义了车辆安装天线所产生的电磁场下暴露人员通常所处的天线位置、工作配置、暴露条件和位置。本文件未推荐具体的峰值空间平均和全身平均SAR限值，因为这些限值在其他文件中已有规定，例如IEEE C95.1-2005和ICNIRP（1998）。关键词：电磁场、有限差分时域（FDTD）、空间平均比吸收率（SAR）、车辆安装天线。 [外文原描述]： IEC/IEEE 62704-2:2017+A1:2025 establishes the concepts, techniques, validation procedures, uncertainties and limitations of the finite difference time domain technique (FDTD) when used for determining the peak spatial-average and whole-body average specific absorption rate (SAR) in a standardized human anatomical model exposed to the electromagnetic field emitted by vehicle mounted antennas in the frequency range from 30 MHz to 1 GHz, which covers typical high power mobile radio products and applications. This document specifies and provides the test vehicle, human body models and the general benchmark data for those models. It defines antenna locations, operating configurations, exposure conditions, and positions that are typical of persons exposed to the fields generated by vehicle mounted antennas. The extended frequency range up to 6 GHz will be considered in future revisions of this document. This document does not recommend specific peak spatial-average and whole-body average SAR limits since these are found in other documents, e.g. IEEE C95.1-2005, ICNIRP (1998). Key words: Electromagnetic Field, Finite-Difference Time Domain (FDTD), Spatial-Average Specific Absorption Rate (SAR), vehicle mounted antennas