一种改进的GPS卫星选择算法研究  

Research for an Improved Algorithm of Selected Satellite Used in GPS

作　　者：张平[1] 周凤岐[1] 周军[1] 

机构地区：[1]西北工业大学航天学院,西安710072

出　　处：《弹箭与制导学报》2006年第S8期781-783,787,共4页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：在传统选星算法基础上,提出了一种改进型选星算法。分别将传统选星算法和改进型选星算法两种方案应用于GPS仿真,仿真试验表明改进的选星算法简单易行,缩短了选星的遍历时间,并得到与传统选星算法精度相当的定位结果。An improved algorithm of selected satellite is brought forward,which is based on traditional constellation-se- lecting method.Separately simulate GPS with two methods.The experiments of simulation prove its availability and precision can meet the requirements of research.At the same time,this method decrease the time of constellation-selec- tion.

关 键 词：全球定位系统 几何精度衰减因子 选星 仿真 

分 类 号：P228.4[天文地球—大地测量学与测量工程]