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。
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%.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2010年第6期657-660,共4页
Geomatics and Information Science of Wuhan University
基金
国家自然科学基金资助项目(40874017)
国家创新研究群体科学基金资助项目(40721001)
国家973计划资助项目(2006CB701301)
关键词
精密单点定位
非差模糊度固定
未检验小数偏差
FBI模型
LAMBDA
precise point positioning
zero-differenced ambiguity resolution
uncalibrated fractional offsets
fractional bias isolating model
LAMBDA
