摘要
尽管GPS已成为高精度的导航定位系统，但它仍存在一些重大误差。只有理解这些误差．才有可能削弱这些误差和了解GPS系统的局限性。
Although the GPS is clearly the most accurate worldwide navigation positioning system yet developed, it still can exhibit significant errors. By understanding these errors, the user can both hope to reduce them and to understand the limitation of the GPS system.
出处
《测绘工程》
CSCD
1999年第3期10-15,共6页
Engineering of Surveying and Mapping
