该市场已经逐步意识到导航和全球定位系统(GPS)工具的优势，尤其是车载导航系统。
The market has become increasingly aware of the advantages of navigation and Global Positioning system (GPS) tools, especially for vehicle navigation systems.
为了满足车载导航系统对精度和连续性的要求，采取辅助手段来补偿GPS定位的缺陷。
To make the vehicle navigation system to meet the requirements of precision and continuity, people take supplementary measures to compensate for the deficiencies of GPS positioning.
在车载导航系统中，相对准确地定位是实现导航的基础和前提。
The accurate positioning is the prerequisite and foundation of a vehicle navigation system.
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