| GPS高精度重复测量中的天线相位中心偏差检测及改正 |
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| 引用本文： | 王雄,王建华,胡亚轩,赵永年.GPS高精度重复测量中的天线相位中心偏差检测及改正[J].内陆地震,2010,24(1):31-36. |
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| 作者姓名： | 王雄 王建华 胡亚轩 赵永年 |
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| 作者单位： | 中国地震局第二监测中心,陕西,西安,710054 |
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| 基金项目： | 地震科学基金(A07132)资助 |
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| 摘 要： | 首先通过GPS接收机在超短基线上检测数据计算天线相位中心偏差,然后对民乐跨断层综合观测场地2007~2008年的GPS点位速率进行校正。从计算结果可知,所用GPS天线相位中心偏差多在亚毫米级。对于距离在几千米的点位,由于各期观测所用天线的不同,使得相位中心的偏差对水平运动速率的影响多在亚毫米级;若各期观测所用天线相同,则影响多在10-2毫米量级。对高精度GPS观测来说,多期观测尽可能采用同一天线。
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| 关 键 词： | GPS测量 天线相位中心偏差 地壳形变 水平运动速率 多期观测 |
GPS ANTENNA PHASE CENTER CHECKING AND ADJUSTING IN THE REPEATED OBSERVATIONS |
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| WANG Xiong,WANG Jian-hua,HU Ya-xuan,ZHAO Yong-nian.GPS ANTENNA PHASE CENTER CHECKING AND ADJUSTING IN THE REPEATED OBSERVATIONS[J].Inland Earthquake,2010,24(1):31-36. |
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| Authors: | WANG Xiong WANG Jian-hua HU Ya-xuan ZHAO Yong-nian |
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| Institution: | The Second Crust Deformation Monitoring Center/a>;CEA/a>;Xi'an 710054/a>;Shaanxi/a>;China |
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| Abstract: | In this paper, the antenna phase center deviation is calculated firstly through the ultra- short baseline surveying by the GPS receiver; Then the rates of GPS sites during 2007 -2008 is adjusted in Minle cross-fault profile. The results show the value of the GPS antenna phase center devi- ation is sub-millimeter. For the sites between several kilometers in the distance, if they are observed with different antenna in several periods, the deviation of the horizontal rates will be in sub-millimeter for the antenna phase center deviation; or, the deviation will only be 10-2 millimeter. For precision GPS observation, the same antenna is used as many as possible in the repeated observations. |
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| Keywords: | GPS observation Antenna phase center deviation Crust deformation Horizontal movement speed Repeated observations |
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