本文關(guān)鍵詞： 星載GPS LEO衛(wèi)星 弱動力法 運(yùn)動學(xué)法 精密定軌　出處：《測繪科學(xué)》2017年01期 　論文類型：期刊論文

【摘要】：隨著星載GPS接收機(jī)性能和精密軌道、鐘差產(chǎn)品精度的提高,星載GPS觀測技術(shù)已成為確定CHAMP、GRACE和GOCE等低軌衛(wèi)星精密軌道的重要手段。文章以GRACE衛(wèi)星為例,分別利用非差弱動力法和非差運(yùn)動學(xué)方法精密確定其軌道,并將結(jié)果和美國噴氣動力實(shí)驗(yàn)室(JPL)事后精密軌道對比。結(jié)果表明:GRACE衛(wèi)星非差弱動力法和非差運(yùn)動學(xué)定軌精度均可達(dá)到厘米級;在使用相同的星歷、鐘差等產(chǎn)品時,弱動力法定軌精度略微優(yōu)于運(yùn)動學(xué)方法。此外,本文采用超快預(yù)報精密星歷實(shí)時確定GRACE衛(wèi)星軌道時精度也優(yōu)于10cm。
[Abstract]:With the improvement of the precision of satellite GPS receiver and precision orbit, spaceborne GPS observation technology has become an important means to determine the precision orbit of low orbit satellites such as champ Grace and GOCE. This paper takes GRACE satellite as an example. The orbit of the orbit is precisely determined by the non-differential weak dynamic method and the non-differential kinematics method, respectively. The results are compared with those of JPL (American Jet Power Laboratory). The results show that the precision of orbit determination by the non-differential weak dynamic method and kinematics of the w Grace satellite can reach the centimeter level, and when using the same ephemeris, clock difference and other products, the accuracy of orbit determination can be reached in centimeter order, when using the same ephemeris, clock error, etc. The orbit accuracy of weakly dynamic orbit method is slightly better than that of kinematics method. In addition, the precision of using ultra-fast prediction precision ephemeris to determine the orbit of GRACE satellite in real time is also better than that of 10 cm.
【作者單位】： 武漢大學(xué)測繪學(xué)院;中國科學(xué)院遙感與數(shù)字地球研究所;
【分類號】：P228.4

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本文編號：1549648