基于融合PPP的GNSS系统时间偏差估计
发布时间：2018-10-19 19:28
【摘要】：针对GNSS系统间时间偏差,从溯源关系出发分析了其产生的来源,并详细介绍了利用融合PPP算法估计系统时间偏差的算法,且针对影响算法的多个因素进行了分析。并以GPS和GLONASS为例,基于全球分布的IGS测站的双模观测数据,利用融合PPP算法估计了GPS-GLONASS系统间时间偏差,发现每个测站求得的GPS-GLONASS系统时间偏差标准差在0~3ns之间,且同种类型接收机有相近的精度,更为重要的是,此法求得的结果虽然和单个接收机有相关性,但对单个接收机却是自洽的,可用于多模导航。
[Abstract]:According to the time deviation between GNSS systems, the origin of the system is analyzed from the source relation, and the algorithm of estimating the system time deviation by using the fusion PPP algorithm is introduced in detail, and several factors affecting the algorithm are analyzed. Taking GPS and GLONASS as examples, based on the two-mode observation data of globally distributed IGS station, the time deviation between GPS-GLONASS systems is estimated by using the fusion PPP algorithm. It is found that the standard deviation of GPS-GLONASS system time deviation obtained by each station is between 0~3ns. And the same type of receiver has similar accuracy. More importantly, the results obtained by this method are self-consistent for a single receiver, although they are related to a single receiver, and can be used in multi-mode navigation.
【作者单位】： 解放军理工大学国防工程学院;地理信息工程国家重点实验室;73061部队;空军测绘大队;
【基金】：国家自然科学基金资助项目(41274016) 地理信息工程国家重点实验室开放基金资助项目(SKLGIE2013-M-2-1)~~
【分类号】：P228.4
本文编号：2282142
[Abstract]:According to the time deviation between GNSS systems, the origin of the system is analyzed from the source relation, and the algorithm of estimating the system time deviation by using the fusion PPP algorithm is introduced in detail, and several factors affecting the algorithm are analyzed. Taking GPS and GLONASS as examples, based on the two-mode observation data of globally distributed IGS station, the time deviation between GPS-GLONASS systems is estimated by using the fusion PPP algorithm. It is found that the standard deviation of GPS-GLONASS system time deviation obtained by each station is between 0~3ns. And the same type of receiver has similar accuracy. More importantly, the results obtained by this method are self-consistent for a single receiver, although they are related to a single receiver, and can be used in multi-mode navigation.
【作者单位】： 解放军理工大学国防工程学院;地理信息工程国家重点实验室;73061部队;空军测绘大队;
【基金】：国家自然科学基金资助项目(41274016) 地理信息工程国家重点实验室开放基金资助项目(SKLGIE2013-M-2-1)~~
【分类号】：P228.4
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