GPS卫星小高度角下多普勒频移的实验分析  

Analysis on the Doppler Shift Exception under Small Elevation of GPS Satellite

作　　者：张爱国[1] 刘梦鑫[1] 陈美连[1] 蓝天祥[1] 

机构地区：[1]厦门理工学院空间信息科学与工程系,福建厦门361024

出　　处：《厦门理工学院学报》2011年第1期30-33,共4页Journal of Xiamen University of Technology

基　　金：福建省科技计划重大项目(2009H0022);厦门市科技计划项目(3502Z20073032)

摘　　要：实时卫星位置解算在整个GPS接收机导航解算过程中占有极其重要的地位.正常情况下,多普勒频移应随着卫星高度角的增大而减小.然而,在对实时卫星位置解算实验进行结果分析时,却出现了高度角(仰角)较小的卫星所解算出的多普勒频移不成反比的现象.针对这一现象,文中设计实验进行分析得出:在高度角小于11°时,高度角大小与多普勒频移不成反比.The real-time satellite calculation of its position plays a very important role in the whole process of navigation solution of the GPS receiver.Generally,the Doppler Frequency decreases while the elevation increases.However,results in the experiment of the real-time satellite calculation of position turns out that the Doppler Frequency is not in inverse with the small elevation.Against this phenomena,this paper makes a conclusion based on experiment that when elevation is less than 11° Doppler Shift is not in inverse with the elevation.

关 键 词：GPS卫星 高度角 多普勒频移 

分 类 号：P228.4[天文地球—大地测量学与测量工程]