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中文摘要：
基于广域精密实时定位系统试算的电离层格网改正数据，使用两种加权方法对参考站上空信号穿刺点的电离层延迟进行了估算，并利用估算出的穿刺点电离层格网计算延迟和实际测量的穿刺点电离层延迟进行了比较。结果表明对于不同位置的测站，中高纬度格网改正较好，低纬度较差，这与电离层的特性有关，并不是加权内插校正方案造成的。
英文摘要：
On the basis of the ionospheric grid-correction data which are tested by wide-area precise real-time positioning system. The ionospheric delay of the signal puncture point over the reference station is estimated by using two weighting methods. Futher more the estimated ionospheric grid delay of the signal puncture point has been compared with those tested in the actual measurement. For the stations located in different positions, in the middle or high-latitude the grid correction is better than that in low-latitude. This result reveals that it is concerning to the characteristics of the ionosphere, but caused by weighted interpolation correction scheme.
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