基于SEID模型的单频PPP双频解算方法研究  

The Research of Dual Frequency Solution Method for Single Frequency Precise Point Positioning(PPP) Based on SEID Model

作　　者：涂锐[1] 黄观文[1] 张勤[1] 王利[1] 

机构地区：[1]长安大学地质工程与测绘学院,西安市雁塔路126号710054

出　　处：《武汉大学学报（信息科学版）》2011年第10期1187-1190,共4页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金资助项目(40902081;40774001;40841021);国家863计划资助项目(2007AA12Z331)

摘　　要：提出了利用区域内的双频观测值建立区域SEID模型,利用单频观测值反演得到双频观测值,进而组成双频无电离层组合观测值,实现了单频PPP双频解算。算例结果表明,本文提出的新方法大大缩短了定位收敛时间,显著地提高了单频PPP的定位精度。Based on the problems of long convergence time and low precision of low cost single receivers caused by the ionospheric delay errors.The author proceses first to establish a high precision Satellite-specific Epoch-differenced Ionospheric Delay model with dual frequency observation information of the area,then single frequency observations inversion to dual frequency observations and can make ionosphere free positioning solution,Finally,get dual frequency solution model of single frequency PPP.Though analyzing the numerical example with real data,the new method in this essay markedly improves the converging speed and positioning accuracy of single-PPP,and its positioning precision is approximately equal to dual frequency accuracy.

关 键 词：SEID模型 单频PPP 电离层延迟 双频PPP 

分 类 号：P228.41[天文地球—大地测量学与测量工程]