| GPS载波相位测量中的信号多路径效应影响研究 |
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| 引用本文： | 袁林果,黄丁发,丁晓利,熊永良,钟萍,李成钢.GPS载波相位测量中的信号多路径效应影响研究[J].测绘学报,2004,33(3):210-215. |
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| 作者姓名： | 袁林果 黄丁发 丁晓利 熊永良 钟萍 李成钢 |
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| 作者单位： | 西南交通大学,土木工程学院,四川,成都,610031;香港理工大学,香港,九龙 |
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| 摘 要： | 当利用GPS进行高精度变形监测时,GPS信号的多路径效应成为影响GPS变形监测精度和可靠性的一种不可忽略的误差源.本文针对GPS载波相位测量中的多路径效应影响进行理论和试验分析.论述载波相位测量中GPS多路径信号的特征,分析它对载波相位测量的影响,提出在坐标域用移动平均进行短基线静态GPS测量多路径误差探测的方法.通过实测数据进行分析,取得满意的效果.
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| 关 键 词： | GPS 多路径效应 载波相位测量 移动平均 |
| 文章编号： | 1001-1595(2004)03-0210-06 |
On the Influence Signal Multipath Effects in GPS Carrier Phase Surveying |
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| YUAN Lin-guo,HUANG Ding-fa,DING Xiao-li,XIONG Yong-liang,ZHONG Ping,LI Cheng-gang.On the Influence Signal Multipath Effects in GPS Carrier Phase Surveying[J].Acta Geodaetica et Cartographica Sinica,2004,33(3):210-215. |
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| Authors: | YUAN Lin-guo HUANG Ding-fa DING Xiao-li XIONG Yong-liang ZHONG Ping LI Cheng-gang |
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| Institution: | YUAN Lin-guo~1,HUANG Ding-fa~1,DING Xiao-li~2,XIONG Yong-liang~1,ZHONG Ping~1,LI Cheng-gang~1 |
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| Abstract: | Recently GPS technique has not only been used for land surveying but also for monitoring applications that requires more accurate and reliable baseline solutions at millimeter level. In these high precision GPS applications, such as structure deformation monitoring, multipath effects could not be ignored or eliminated by averaging. The influence of multipath effects in GPS carrier phase surveying is theoretically analyzed, the characteristics of signal multipath effects and the effective magnitude of the measurements of carrier-phase are studied. A moving average method of detecting multipath effects in coordinate sequence for a short static baseline is presented based on the previous analysis, and some useful results from the experience are summarized. |
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| Keywords: | GPS multipath effects carrier phase surveying moving average |
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