本文關(guān)鍵詞：北斗精密定軌及廣播星歷軌道精度評估　出處：《測繪工程》2016年11期 　論文類型：期刊論文

  更多相關(guān)文章： 北斗 廣播星歷 精度 評估

【摘要】：目前各類用戶對基于北斗衛(wèi)星導(dǎo)航定位服務(wù)需求在不斷擴大,由于廣播星歷實時、易獲取,北斗廣播星歷精度是實時導(dǎo)航定位用戶關(guān)心的問題,也是檢驗系統(tǒng)是否達(dá)成設(shè)計指標(biāo)的關(guān)鍵因素。文中基于國家基準(zhǔn)站和MGEX站計算北斗精密軌道,重復(fù)弧段精度優(yōu)于利用國際站計算結(jié)果。將計算的北斗精密軌道作為參考,更加準(zhǔn)確地評估分析北斗廣播星歷軌道誤差的精度。分析結(jié)果顯示,北斗廣播星歷軌道徑向精度優(yōu)于法向和切向精度,且法向誤差具有較為明顯的周期性。各類衛(wèi)星中,GEO衛(wèi)星精度稍差,而IGSO和MEO衛(wèi)星與GPS在同一量級。隨著北斗衛(wèi)星系統(tǒng)逐步組網(wǎng)完善,地面監(jiān)測站分布趨于合理,北斗系統(tǒng)整體性能將會不斷提高。
[Abstract]:At present, the demand of various users for navigation and positioning services based on Beidou satellite is expanding. Because broadcast ephemeris is real-time, easy to obtain, the accuracy of Beidou broadcast ephemeris is a concern of real-time navigation and positioning users. It is also the key factor to test whether the system can reach the design target. This paper calculates the Beidou precision orbit based on the national reference station and MGEX station. The precision of repeated arc section is better than that of the international station. The calculated Beidou precise orbit is used as a reference to evaluate and analyze the accuracy of Beidou broadcast ephemeris orbit error more accurately. The analysis results show that. The radial accuracy of Beidou broadcast ephemeris is better than that of normal and tangential, and the normal error is obviously periodic. The IGSO and MEO satellites are of the same order of magnitude as GPS. With the gradual improvement of the Beidou satellite system, the distribution of ground monitoring stations tends to be reasonable, and the overall performance of the Beidou satellite system will be continuously improved.
【作者單位】： 武漢大學(xué)測繪學(xué)院;國家基礎(chǔ)地理信息中心;導(dǎo)航與位置服務(wù)國家測繪地理信息局重點實驗室;
【基金】：國家測繪地理信息局基礎(chǔ)測繪科技項目(15-JC-C01-5);國家測繪地理信息局公益性科研專項(201512004) 國家863科技計劃(2014AA123104)
【分類號】：P228
【正文快照】：

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