北斗GEO衛(wèi)星星體多徑反射模型的研究
發(fā)布時(shí)間:2018-03-15 16:50
本文選題:多徑效應(yīng) 切入點(diǎn):北斗GEO衛(wèi)星 出處:《西北工業(yè)大學(xué)學(xué)報(bào)》2017年03期 論文類型:期刊論文
【摘要】:多徑干擾是影響北斗GEO衛(wèi)星的主要誤差源之一,為了研究北斗GEO衛(wèi)星多徑誤差產(chǎn)生機(jī)理,提出了針對(duì)北斗GEO衛(wèi)星星體表面的信號(hào)反射模型,并通過(guò)基于交叉驗(yàn)證的小波算法對(duì)KARR和XMIS站點(diǎn)接收的北斗GEO衛(wèi)星觀測(cè)數(shù)據(jù)進(jìn)行分析。同時(shí)針對(duì)反射模型設(shè)計(jì)出基于"Morlet"連續(xù)小波變換的數(shù)值優(yōu)化算法,得到反射參數(shù)。KARR和XMIS站的仿真數(shù)據(jù)表明,文中提出的衛(wèi)星多徑反射模型可以很好地對(duì)實(shí)測(cè)環(huán)境中測(cè)得的衛(wèi)星多徑進(jìn)行預(yù)測(cè)。
[Abstract]:Multipath interference is one of the main error sources affecting Beidou GEO satellite. In order to study the mechanism of Beidou GEO satellite multipath error, a signal reflection model for Beidou GEO satellite surface is proposed. The Beidou GEO satellite observation data received by KARR and XMIS stations are analyzed by wavelet algorithm based on cross-validation. A numerical optimization algorithm based on "Morlet" continuous wavelet transform is designed for reflection model. The simulation data of reflection parameter. KARR and XMIS station show that the satellite multipath reflection model proposed in this paper can well predict the satellite multipath measured in the measured environment.
【作者單位】: 西北工業(yè)大學(xué)電子信息學(xué)院;
【基金】:國(guó)家自然科學(xué)基金(61301094) 北斗重大專項(xiàng)基金(GFZX0301040115)資助
【分類號(hào)】:P228.4
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