摘要
在卫星导航定位系统中,多普勒频率偏移是影响接收机性能的关键因素之一。通过对地面卫星信号覆盖区内的多普勒频率偏移及不确定性范围的计算,给出了卫星导航系统信号的多普勒频率偏移与接收机位置之间的关系。对多普勒不确定范围做了定量分析,提出了压缩多普勒不确定范围的方法。
In the satellite navigation and positioning system, Doppler shift is one of the key problems that may degrade the performance of the satellite receiver. By calculating the Doppler shift and its uncertainty in the signal covering area, the relation between Doppler shift and the position of the receiver is obtained. Quantitative analysis of Doppler uncertainty range is derived. A method for compressing Doppler uncertainty is presented.
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2003年第5期48-51,共4页
Journal of National University of Defense Technology
基金
国家部委预研基金项目资助(106010303)
