在GPS的广域、局域增强导航系统和rtk的应用中，电离层延迟改正的准确度都是决定测量定位结果能否达到精度要求的重要因素。
The accuracy of ionospheric delay correction is an important factor that affects the positioning precision in the applications of GPS in wide area, local area navigation systems and RTK.
现在新奥迪a6搭载了一款增强版的导航系统，它采用了来自谷歌(Google)的技术，提供了搜索和影音播放功能，它可能使驾驶者的分心程度达到一个全新的高度。
An enhanced navigation system in the new Audi A6, drawing on technology from Google (GOOG), offers search and display functions that could take driver distraction to a whole new level.
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