阐述了广域增强系统电离层延迟网格修正算法流程、思路及特点，希望能给相关研究者提供参考。
The flowchart and characteristic of the grid-based algorithm fur Ionospheric delay correction in WAAS are discussed.
通过对基准站上空的格网内的电离层穿透点个数进行统计分析，讨论了我国广域增强系统基准站的布局与数量问题。
It analyses the quantity of ionosphere Pierce point in grid above the reference stations, and simply discusses the question of reference stations position and quantity in China WAAS.
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.
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.
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