| GPS??????β????е??·??Ч??????о? |
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| 引用本文： | 戴吾蛟,丁晓利,朱建军.GPS??????β????е??·??Ч??????о?[J].大地测量与地球动力学,2008,28(1):65-71. |
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| 作者姓名： | 戴吾蛟 丁晓利 朱建军 |
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| 作者单位： | 1. 中南大学测绘与国土信息工程系,长沙,410083
2. 香港理工大学土地测量与地理咨讯学系,香港九龙 |
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| 基金项目： | 国家自然科学基金(40704002)，香港特别行政区研究基金RGC项目(PolyU5138/04E) |
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| 摘 要： | ?????????Χ??????????????GPS??·??Ч????к??????????????????β????е?GPS??·??Ч?????????????????????????????顣???????????????μ???е??·??Ч?????????г??????????????????????????????????????????????????????????????????????????????????????????t????????????????????·??Ч??????????????GPS???????????????30%?????
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| 关 键 词： | GPS ??·??Ч? ???μ?? ????????? ??????? |
| 文章编号： | 1671-5942（2008）01-0065-07 |
| 收稿时间： | 2007-09-21 |
| 修稿时间： | 2007年9月21日 |
STUDY ON MULTIPATH EFFECT IN STRUCTURE HEALTH MONITORING USING GPS |
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| Dai Wujiao,Ding Xiaoli,Zhu Jianjun.STUDY ON MULTIPATH EFFECT IN STRUCTURE HEALTH MONITORING USING GPS[J].Journal of Geodesy and Geodynamics,2008,28(1):65-71. |
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| Authors: | Dai Wujiao Ding Xiaoli Zhu Jianjun |
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| Institution: | 1)Department of Survey Engineering and Geomatics, Central South University, Changsha 4100832)Department of Land Surveying and Geo- informatics, Hong Kong Polytechnic University, Hongkong |
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| Abstract: | The multipath effect has strong repeatability when the surveying point and its surroundings keep unchanged. In order to analyze the property of the multipath effect in GPS for deformation observation, a vibration measurement test is carried out by use of a simulation vibration table. The results show that there are some jumps of high frequency in the multipath error series and its main frequency is near to the vibration frequency of the table,thus it makes the repeatability down,but in the part of low frequency.After the multipath correction using the part of low frequency which has a certain repeatability,the accuracy of GPS measurement can be improved about 30%. |
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| Keywords: | GPS multipath effect deformation monitoring structure health monitoring dynamic surveying |
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