摘要
论述了多普勒效应对 GPS伪距测量的影响 ,建立了 GPS伪距测量多普勒改正的模型。研究表明 ,多普勒效应对伪距观测值的影响与伪距和伪距变化率的积成正比。伪距观测值的多普勒改正的符号与伪距变化率的符号相同。多普勒改正值在卫星升起和降落时最大 ,其最大值可达到 60 m左右 ;在卫星最高位置时最小 ,其值接近于 0。
In this paper,the influence of Doppler effect on GPS pseudo range measurement is described and the model of doppler correction for GPS pseudo range measurement is established. The study indicates that the influence of Doppler effect on pseudo range observations is proportional to the product of pseudo range and the rate of pseudo range variation. The symbol of Doppler correction for pseudo range observations is the same as that of the rate of pseudo range variation. The Doppler correction will be the maximum of about 60 m when the satellite is rising and landing, and the minimum of about zero when the satellite is at the highest location. The influence of Doppler effect on pseudo range observations is negatively symmetric to the highest location of satellite.
出处
《地壳形变与地震》
CSCD
2000年第1期51-55,共5页
Crustal Deformation and Earthquake
关键词
伪距测量
多普勒效应
计算模型
GPS
pseudo range measurement, Doppler effect, calculation model
