基于融合PPP的GNSS系統(tǒng)時間偏差估計
發(fā)布時間：2018-10-19 19:28
【摘要】：針對GNSS系統(tǒng)間時間偏差,從溯源關(guān)系出發(fā)分析了其產(chǎn)生的來源,并詳細介紹了利用融合PPP算法估計系統(tǒng)時間偏差的算法,且針對影響算法的多個因素進行了分析。并以GPS和GLONASS為例,基于全球分布的IGS測站的雙模觀測數(shù)據(jù),利用融合PPP算法估計了GPS-GLONASS系統(tǒng)間時間偏差,發(fā)現(xiàn)每個測站求得的GPS-GLONASS系統(tǒng)時間偏差標準差在0~3ns之間,且同種類型接收機有相近的精度,更為重要的是,此法求得的結(jié)果雖然和單個接收機有相關(guān)性,但對單個接收機卻是自洽的,可用于多模導航。
[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.
【作者單位】： 解放軍理工大學國防工程學院;地理信息工程國家重點實驗室;73061部隊;空軍測繪大隊;
【基金】：國家自然科學基金資助項目(41274016) 地理信息工程國家重點實驗室開放基金資助項目(SKLGIE2013-M-2-1)~~
【分類號】：P228.4
本文編號：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.
【作者單位】： 解放軍理工大學國防工程學院;地理信息工程國家重點實驗室;73061部隊;空軍測繪大隊;
【基金】：國家自然科學基金資助項目(41274016) 地理信息工程國家重點實驗室開放基金資助項目(SKLGIE2013-M-2-1)~~
【分類號】：P228.4
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