【摘要】：針對(duì)GNSS系統(tǒng)間時(shí)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(xì)介紹了利用融合PPP算法估計(jì)系統(tǒng)時(shí)間偏差的算法,且針對(duì)影響算法的多個(gè)因素進(jìn)行了分析。并以GPS和GLONASS為例,基于全球分布的IGS測(cè)站的雙模觀測(cè)數(shù)據(jù),利用融合PPP算法估計(jì)了GPS-GLONASS系統(tǒng)間時(shí)間偏差,發(fā)現(xiàn)每個(gè)測(cè)站求得的GPS-GLONASS系統(tǒng)時(shí)間偏差標(biāo)準(zhǔn)差在0~3ns之間,且同種類型接收機(jī)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(gè)接收機(jī)有相關(guān)性,但對(duì)單個(gè)接收機(jī)卻是自洽的,可用于多模導(dǎo)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(xué)國(guó)防工程學(xué)院;地理信息工程國(guó)家重點(diǎn)實(shí)驗(yàn)室;73061部隊(duì);空軍測(cè)繪大隊(duì);
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(41274016) 地理信息工程國(guó)家重點(diǎn)實(shí)驗(yàn)室開放基金資助項(xiàng)目(SKLGIE2013-M-2-1)~~
【分類號(hào)】：P228.4

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