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。
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.
出处
《地壳形变与地震》
CSCD
2000年第1期43-50,共8页
Crustal Deformation and Earthquake
关键词
GPS
伪距观测值
径向速度
径速偏差
GPS, pseudo range observations, radial velocity, radial velocity deviation.
