本手册旨在支持ECSS-E-AS-11对空间项目要求的实施。 为此，本手册提供了如何在给定环境中评估产品技术成熟度的指南，如何在产品开发框架中使用TRL评估结果，以及如何对TRL评估方法可扩展到的特定学科或产品进行进一步改进。购买本文件时可获得的所有当前修订均包含在购买本文件中。

The present handbook is provided to support the implementation of the requirements of ECSS-E-AS-11 to space projects. With this purpose, this handbook provides guidelines on the way to assess the maturity of a technology of a product in a given environment, to use the TRL assessment outcome in the product development framework, and to introduce some further refinements for specific disciplines or products to which the TRL assessment methodology can be extended.All current amendments available at time of purchase are included with the purchase of this document.