摘要
本文通过设计不同的计算方案详细分析了ＧＰＳ观测中的仪器偏差对确定电离层延迟的影响，利用多天实测数据，结合仪器偏差与电离层延迟的分离方法，探讨了仪器偏差的稳定性，并提出了一种静态实时确定电离层延迟的方案。算例表明它能较有效克服仪器偏差影响。
The effects of Instrumental Bias(IB) in GPS observations on determining ionospheric delays are analyzed with different calculating schemes in detail and some useful conclusions are drawn. Stability of IB is also researched with the method for separating it from ionospheric delays using multi day GPS data. An improved algorithm about static real time determination of ionospheric delays is presented on the basis of the predicted values of IB and the technique of real time averaging of noise and weighted adjustment of dual P code and carrier phase measurements. Its effectiveness is verified with examples in which the instrumental bias are efficiently calibrated . The algorithm may be used in WAAS.
出处
《测绘学报》
EI
CSCD
北大核心
1999年第2期110-114,共5页
Acta Geodaetica et Cartographica Sinica
基金
中国科学院动力大地测量学开放研究实验室
国防科工委重大项目子课题资助项目
