ISO 17123-8:2007规定了确定和评估全球导航卫星系统（GNSS）现场测量系统（包括GPS、GLONASS以及伽利略等未来系统）在实时运动学（GNSS RTK）及其辅助设备用于建筑、测量和工业测量时的精度（可重复性）时应采用的现场程序。这些测试主要用于现场验证特定仪器是否适用于手头所需的应用，并满足其他标准的要求。它们并不是作为验收测试或性能评估而提出的，本质上更全面。

ISO 17123-8:2007 specifies field procedures to be adopted when determining and evaluating the precision (repeatability) of Global Navigation Satellite System (GNSS) field measurement systems (this includes GPS, GLONASS as well as the future systems like GALILEO) in real-time kinematic (GNSS RTK) and their ancillary equipment when used in building, surveying and industrial measurements. Primarily, these tests are intended to be field verifications of the suitability of a particular instrument for the required application at hand, and to satisfy the requirements of other standards. They are not proposed as tests for acceptance or performance evaluations that are more comprehensive in nature.