张小红, 李星星. 非差模糊度整数固定解PPP新方法及实验[J]. 武汉大学学报 ( 信息科学版), 2010, 35(6): 657-660.
引用本文: 张小红, 李星星. 非差模糊度整数固定解PPP新方法及实验[J]. 武汉大学学报 ( 信息科学版), 2010, 35(6): 657-660.
ZHANG Xiaohong, LI Xingxing. A New Method for Zero-Differenced Interger Ambiguity Resolution and Its Application to PPP[J]. Geomatics and Information Science of Wuhan University, 2010, 35(6): 657-660.
Citation: ZHANG Xiaohong, LI Xingxing. A New Method for Zero-Differenced Interger Ambiguity Resolution and Its Application to PPP[J]. Geomatics and Information Science of Wuhan University, 2010, 35(6): 657-660.

非差模糊度整数固定解PPP新方法及实验

A New Method for Zero-Differenced Interger Ambiguity Resolution and Its Application to PPP

  • 摘要: 分析了标准模型中非差模糊度无法固定的原因,提出了非差模糊度整数解的小数偏差分离(fractional bias isolating,FBI)模型与方法。实验结果表明,使用30min的静态观测数据,即可达到水平方向mm级、高程cm级的定位精度,相比浮点解水平方向精度提高了一个数量级,高程方向也改善了50%~60%,同时,对流层天顶延迟ZPD的精度也有20%~30%的改善。

     

    Abstract: We analyze the reason that zero-differenced ambiguity cann’t be fixed in a standard mode.We proposed the FBI(fractional bias isolation) mode and method for zero-differenced interger ambiguity resolution.We found that with 30 min observations,the accuracy of mm-level in horizontal and cm-level in elevation direction can be achieved,which has respectively enhanced one order of magnitude and has improved approximately 50%-60% in horizontal and elevation direction compared to float solution.In the meantime,the accuracy of ZPD(zenith path delay) estimation has been also ameliorated about 20%-30%.

     

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