【摘要】：針對系統(tǒng)地評估我國北斗衛(wèi)星導(dǎo)航系統(tǒng)廣播星歷精度與保障實(shí)時(shí)導(dǎo)航定位服務(wù)的需求,對BDS廣播星歷提供的衛(wèi)星軌道、鐘差以及用戶測距誤差(URE)的精度性能進(jìn)行分析,統(tǒng)計(jì)了2015年連續(xù)4周全部BDS在軌健康衛(wèi)星的廣播星歷各項(xiàng)精度指標(biāo)值。分析結(jié)果表明:BDS的MEO和IGSO衛(wèi)星軌道精度優(yōu)于GEO衛(wèi)星結(jié)果,且徑向精度優(yōu)于法向和切向精度;BDS搭載的國產(chǎn)星載銣鐘衛(wèi)星鐘差序列相對比較穩(wěn)定,其均方根誤差優(yōu)于4ns;GEO/IGSO衛(wèi)星的用戶距離誤差(URE)在6m以內(nèi),MEO的URE優(yōu)于20m。研究結(jié)果對北斗系統(tǒng)的建設(shè)、后期的發(fā)展和用戶市場的拓展,都具有重要的參考價(jià)值。
[Abstract]:In order to evaluate the accuracy of broadcast ephemeris of Beidou satellite navigation system in China systematically and to guarantee the real-time navigation and positioning service, the accuracy performance of satellite orbit, clock error and user ranging error (URE) provided by BDS broadcast ephemeris are analyzed. The broadcast ephemeris of all BDS healthy satellites in orbit for 4 consecutive weeks in 2015 are calculated. The results show that the orbit accuracy of MEO and IGSO satellites in BDS is better than that of GEO satellites, and the radial accuracy is better than that of normal and tangential direction, and the satellite clock difference sequence of domestic satellite carried on BDS is relatively stable. The root-mean-square error (RMS) is better than that of 4nsgo / IGSO satellite, the user distance error (URE) is less than 6m, and the URE of MEO is better than 20m. The results have important reference value for the construction of Beidou system, the later development and the expansion of user market.
【作者單位】： 重慶交通大學(xué)土木工程學(xué)院;長安大學(xué)地質(zhì)工程與測繪學(xué)院;
【基金】：國家自然科學(xué)基金項(xiàng)目(41104019,41274005,41202189)
【分類號(hào)】：TN967.1

【相似文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 劉星東;同步衛(wèi)星廣播星歷設(shè)計(jì)與實(shí)現(xiàn)[D];中國科學(xué)院研究生院（國家授時(shí)中心）;2014年

，

本文編號(hào)：2278871