| 在GPS伪距观测值中发现径速偏差 |
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| 引用本文： | 胡新康,李延兴.在GPS伪距观测值中发现径速偏差[J].大地测量与地球动力学,2000,20(1):43-50. |
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| 作者姓名： | 胡新康 李延兴 |
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| 作者单位： | 中国地震局第一地形变监测中心,天津,300180 |
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| 摘 要： | 在 GPS伪距观测值中 ,发现存在着随测站和卫星距离变化而产生的系统偏差。经过严密、系统的计算 ,证明它是普遍存在的一种自然现象。它的主要部分和径向速度呈线性关系 ,在卫星向测站运动时伪距值偏大 ,在卫星背向测站运动时伪距值偏小 ,并呈负对称 ,偏差最大可达60 m。
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| 关 键 词： | GPS 伪距观测值 径向速度 径速偏差 |
| 修稿时间： | 1999-04-14 |
DEVIATION OF RADIAL VELOCITY DISCOVERED IN GPS PSEUDO-RANGE OBSERVATIONS |
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| Hu Xinkang,Li Yanxing.DEVIATION OF RADIAL VELOCITY DISCOVERED IN GPS PSEUDO-RANGE OBSERVATIONS[J].Journal of Geodesy and Geodynamics,2000,20(1):43-50. |
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| Authors: | Hu Xinkang Li Yanxing |
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| Institution: | Hu Xinkang and Li Yanxing
(No.1 Crust Deformation Monitoring Center, CSB.Tianjing 300180) |
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| Abstract: | It is discovered that in the GPS pseudo range observations the variation of the distance between GPS Satellite and receiver causes a systematic deviation which can be expressed by a mathematical formula and it is linearly related to the radial velocity of the receiver to satellite. When the satellite moves toward or away from the receiver, the observed range will be larger or smaller, and with a negative symmetry. The maximum deviation is about 60 m. |
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| Keywords: | GPS pseudo range observations radial velocity radial velocity deviation |
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