基于克里金插值法的NRTK误差改正  

Errors correction of NRTK based on Kriging interpolation method

作　　者：石鑫[1] 吕志伟[1] 杨川 张宇 

机构地区：[1]信息工程大学导航与空天目标工程学院,郑州450001 [2]核工业西南勘察设计研究院有限公司,成都610061

出　　处：《导航定位学报》2016年第2期102-107,共6页Journal of Navigation and Positioning

基　　金：上海海事局项目(2013404705);浙江北斗高精度地基增强网建设项目(AB14002006-4)

摘　　要：针对NRTK中流动站误差修正时,传统内插模型改正精度不高的问题,提出用克里金插值法对流动站误差进行建模估计,并阐述方法的数学过程。结果表明,克里金插值法能够有效改正用户电离层、对流层延迟,改正精度较常规内插方法有所提高:当用户位于基站网络内部时,克里金插值法的电离层和对流层改正精度与常规内插算法相当;用户位于网外时,常规内插方法难以有效改正用户大气延迟,而克里金插值法在网外一定范围内仍能有效改正电离层、对流层延迟。The paper used Kriging interpolation method to correct errors of rover to solve the problem that traditional interpolation method can＇t correct well in network RTK,and explained the method with it＇s mathematical principle.The results showed that Kriging interpolation method could correct user＇s ionosphere delay and troposphere delay effectively and get higher accuracy than traditional interpolation method;the precision of ionosphere and tropospheric correction would have no obvious improvement while the user is inside of the stations net;and the Kriging interpolation method could correct atmospheric delay effectively even users locate a certain range outside of the stations net comparing with traditional interpolation method.

关 键 词：克里金 NRTK 电离层延迟 对流层延迟 误差改正 

分 类 号：P228.1[天文地球—大地测量学与测量工程]