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| ?????????????????PPP-ZTD???????? | |
| 引用本文： | 李黎,李浩军,龙四春,沈军,张立亚.?????????????????PPP-ZTD????????[J].大地测量与地球动力学,2015,35(1):77-80. |
| 作者姓名： | 李黎 李浩军 龙四春 沈军 张立亚 |
| 作者单位： | 1 湖南科技大学煤炭资源清洁利用与矿山环境保护湖南省重点实验室， 湘潭市桃园路, 411201 2 中国科学院上海天文台， 上海市南丹路80号, 200030 3 湖南省气候中心， 长沙市芙蓉南路四段196号, 410119 |
| 基金项目： | 国家自然科学基金（41304029，41204034，41004002）；湖南省教育厅科学研究项目（12C0105）；湖南省科技计划（2012FJ4271） |
| 摘 要： | ?????????????ZTD?????????????????????????????????仯????????????????е???t?????????塣??????????λ??????PPP???????????????????????????PPP-ZTD??????????????????????????????С??30 s?????????PPP-ZTD(RMS<4 mm)??5 min??????RMS<6 mm????????????5 s??30 s??????????????????????ZTD???????? |
| 关 键 词： | ???? ????????? ???????λ ??????? ??????? |
| 收稿时间： | 2013-09-30 |
The Influence of Satellite Clock Bias Sampling Intervals on the Precision of High Frequency PPP-ZTD |
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| LI Li,LI Haojun,LONG Sichun,SHEN Jun,ZHANG Liya.The Influence of Satellite Clock Bias Sampling Intervals on the Precision of High Frequency PPP-ZTD[J].Journal of Geodesy and Geodynamics,2015,35(1):77-80. | |
| Authors: | LI Li LI Haojun LONG Sichun SHEN Jun ZHANG Liya |
| Institution: | 1 Hunan Provincial Key Laboratory of Clean Coal Resources Utilization and Mine Eviromental Protection， Hunan University of Science and Technology， Taoyuan Road, Xiangtan 411201, China 2 Shanghai Astronomical Observatory，Chinese Academy of Sciences，80 Nandan Road, Shanghai 200030, China 3 The Climate Center of Hunan Province，196 South-Furong Road, Changsha 410119, China |
| Abstract: | The high temporal transient changes of water vapor content can be reflected by high frequency zenith tropospheric delay(ZTD)which is important for rainstorm short term precasting.Based on the precise point positioning(PPP)technology，the PPP-ZTD precision with the different sampling interval satellite clock biases(SCB)was analyzed.The result indicates that the precisions of PPP-ZTD(RMS <4 mm)with 5 s and 30 s sampling interval SCBs were better than the precisions of PPP-ZTD(RMS<6 mm)with 5 min sampling interval SCB.Both the obtained PPP-ZTD precision with the sampling interval of 5 s and 30 s SCBs are considerable. |
| Keywords: | near real time zenith tropospheric delay precise point positioning satellite clock bias sampling interval |
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