卫星导航系统信号的多普勒特性分析  

The Analysis of Doppler Performance of the Satellite Navigation Signal

作　　者：许晓勇[1] 王飞雪[1] 庄钊文[1] 

机构地区：[1]国防科技大学电子科学与工程学院,湖南长沙410073

出　　处：《国防科技大学学报》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)

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.

关 键 词：多普勒 接收机 卫星定位 全球定位系统 卫星导航定位系统 

分 类 号：TN967.1[电子电信—信号与信息处理]