| 伪卫星增强GPS方法在变形监测中的应用研究 |
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| 引用本文： | 何秀凤,陈永奇,桑文刚,杨光.伪卫星增强GPS方法在变形监测中的应用研究[J].测绘学报,2006,35(4):315-320. |
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| 作者姓名： | 何秀凤 陈永奇 桑文刚 杨光 |
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| 作者单位： | 1. 河海大学,卫星及空间信息应用研究所,江苏,南京,210098
2. 香港理工大学,土地测量与地理资讯学系,香港 |
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| 基金项目： | 国家自然科学基金
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香港研究资助委员会科研基金 |
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| 摘 要： | 应用GPS对深开采的露天矿以及深山峡谷中的水库大坝进行变形监测,由于接收到的GPS卫星数目减少,导致GPS定位精度大大降低。采用伪卫星增强GPS的定位技术是解决这个问题的有效途径之一。提出GPS伪卫星组合测量新方法,建立组合观测量模型,开发减小伪卫星多路径效应的方法。基于实际的水电站观测数据分析伪卫星增强GPS提高定位精度的效果,给出GPS伪卫星组合定位的试验结果并验证所开发方法的有效性。
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| 关 键 词： | 全球定位系统 伪卫星 变形监测 精密定位 |
| 文章编号： | 1001-1595（2006）04-0315-06 |
| 收稿时间： | 11 23 2005 12:00AM |
| 修稿时间： | 2005-11-232006-06-22 |
Pseudolite-augmented GPS for Deformation Monitoring: Analysis and Experimental Study |
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| HE Xiu-feng,CHEN Yong-qi,SANG Wen-gang,YANG Guang.Pseudolite-augmented GPS for Deformation Monitoring: Analysis and Experimental Study[J].Acta Geodaetica et Cartographica Sinica,2006,35(4):315-320. |
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| Authors: | HE Xiu-feng CHEN Yong-qi SANG Wen-gang YANG Guang |
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| Abstract: | Although GPS has been widely used for deformation monitoring,many survey environments,like in deep open-pit mines and valleys,limit the number of visible GPS satellites,deteriorating the survey accuracy.Pseudolite-augmented GPS survey system can strengthen the positioning geometry.This study concentrates on pseudolite(PSL) application in deformation monitoring.The methodology for integration of GPS and PSL measurements is developed,in particular the method/strategy to estimate PSL multipath effect,one of the server sources of errors in PSL measurements.An analysis is conducted to illustrate how PSL measurements can improve the strength of positioning geometry at a hydro-power dam.A set of real GPS/PSL observations are processed to demonstrate the usefulness of the developed methodology. |
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| Keywords: | GPS pseudolite deformation monitoring precision positioning |
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