IEC/IEEE 62704的这一部分确立了时域有限差分法（FDTD）的概念、技术、验证程序、不确定性和局限性，用于确定暴露在电磁场中的标准人体解剖模型中的峰值空间平均和全身平均比吸收率（SAR） 由车载天线发射，频率范围为30 MHz至1 GHz，涵盖典型的大功率移动无线电产品和应用。本文件规定 并提供测试车辆、人体模型以及这些模型的通用基准数据。 它定义了天线位置、操作配置、曝光条件和 暴露在车载天线产生的磁场中的人员的典型位置。本文件的未来版本将考虑将频率范围扩展至6 GHz。本文件不推荐特定的峰值空间平均和全身平均SAR限值，因为这些限值可在其他文件中找到，例如IEEE C95。1-2005, ICNIRP（1998年）。

This part of IEC/IEEE 62704 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).