多路径效应分段仿真方法  

Simulation Modeling of Multipath Effect for Satellite Navigation Monitoring Station Receiver Based on a Segmentalization Technique

作　　者：张利云[1,2] 黄文德[2] 明德祥[2] 盛利元[1] 

机构地区：[1]中南大学物理与电子学院,长沙市麓山南路932号410083 [2]国防科技大学机电工程与自动化学院,长沙市德雅路109号410073

出　　处：《大地测量与地球动力学》2015年第1期106-110,共5页Journal of Geodesy and Geodynamics

基　　金：国家高技术研究发展计划(2012AA121804);第二代卫星导航重大专项(GFZX0301010105)

摘　　要：针对多路径效应的建模仿真问题,首先分析多路径效应的静态特性,提取其影响参数,然后根据影响参数建立多路径效应的球谐函数分段模型及三角级数分段模型,并对这两种模型的精度及计算复杂度进行比较。研究表明,采用三角级数模型和球谐函数模型对多路径效应进行分段模拟是可行的,且三角级数模型优于球谐函数模型。Multipath effect is one of the main errors that affect the positioning accuracy of satellite navigation receiver.Aiming at multipath modeling,firstly,property of static multipath is analyzed,parameters that influence multipath are extracted,and correlation relationship between them is established.Then,segmented spherical harmonic and segmented trigonometric series function model of multipath are constructed,and the precision and complexity of these two models are compared.The result shows that segmented constructing multipath model using trigonometric series model and spherical harmonic function model is feasible and the former is better than the latter.

关 键 词：多路径 仿真建模 GNSS系统 球谐函数 三角级数 

分 类 号：P228.41[天文地球—大地测量学与测量工程]