大地测量与地球动力学2013，Vol.33Issue(1)：69-73,5.
基于区域电离层建模的单点定位应用分析
REGIONAL IONOSPHERIC MODELING AND ITS APPLICATION IN SINGLE POINT POSITIONING ANALYSIS
摘要
Abstract
We extracted ionospheric delay from the combination observations, built the regional ionospheric model and then tested the WHU products by processing single point positioning for rover stations data. The validation of a provincial CORS (Continuously Operating Reference Stations) network confirms that the single-frequency SPP of WHU product results present significantly better than CODE product and dual-frequency SPP, at the same time, single-frequency PPP accuracy increases by about 10%×30% in three directions compared with CODE product, can reach up to about 1-1. 5dm in the north and east direction, and 2-2. 5 dm in the up direction. Finally, we processed dual-frequency PPP with WHU ionospheric product, the experimental results show that the precision ionospheric products play a significant role to improve the initial positioning accuracy, and accelerate dual-frequency PPP convergence and interrupt re-convergence.关键词
区域电离层模型/精密单点定位/伪距单点定位/双频/单频Key words
regional ionospheric model/Precise Point Positioning ( PPP)/Single-point Pseudorange Positioning (SPP)/dual-frequency/single-frequency分类
天文与地球科学引用本文复制引用
张瑞,姚宜斌,郑艳丽..基于区域电离层建模的单点定位应用分析[J].大地测量与地球动力学,2013,33(1):69-73,5.基金项目
国家自然科学基金(41174012,41021061) （41174012,41021061）
中央高校基本科研业务费专项(201121402020008,2012618020202) （201121402020008,2012618020202）
