ISO 14638:2014是一项基本的ISO GPS标准。它解释了几何产品规范（ISO GPS）的概念，并提供了一个框架来说明当前和未来的ISO GPS标准如何满足ISO GPS系统的要求。 该框架旨在通过说明不同标准的范围，并展示它们之间的关系，为ISO GPS标准的用户提供帮助。 该框架还用于组织技术委员会ISO/TC 213制定GPS标准。

ISO 14638:2014 is a fundamental ISO GPS standard. It explains the concept of Geometrical Product Specification (ISO GPS), and provides a framework to illustrate how current and future ISO GPS standards address the requirements of the ISO GPS system. The framework is intended to be of use to users of ISO GPS standards, by illustrating the extent of the scope of the different standards, and showing how they relate to each other. The framework is also used for structuring the development of standards for GPS by technical committee ISO/TC 213.