星間鏈路構(gòu)型對(duì)自主導(dǎo)航精度的影響分析
發(fā)布時(shí)間:2019-01-05 08:32
【摘要】:以北斗仿真星座為對(duì)象,探討UHF波段與Ka波段的不同星間鏈路建鏈條件下GEO、IGSO及MEO衛(wèi)星的可見鏈路數(shù)及PDOP值的變化。此外,還針對(duì)不同星間鏈路構(gòu)型方案,分別采用其對(duì)應(yīng)仿真觀測(cè)數(shù)據(jù)進(jìn)行60d自主導(dǎo)航解算,通過對(duì)解算結(jié)果精度的分析,探討星間鏈路測(cè)距模式及星間鏈路構(gòu)型對(duì)自主導(dǎo)航的影響。結(jié)果顯示,星間鏈路測(cè)距模式對(duì)自主導(dǎo)航精度無影響,而星間鏈路構(gòu)型則對(duì)自主導(dǎo)航精度存在cm量級(jí)的影響。在星間鏈路設(shè)計(jì)過程中應(yīng)綜合考慮導(dǎo)航精度、鏈路負(fù)荷及建設(shè)成本等因素,以達(dá)到最優(yōu)效果。
[Abstract]:Taking Beidou simulation constellation as an object, the changes of visible link number and PDOP value of GEO,IGSO and MEO satellites under different inter-satellite link construction conditions of UHF band and Ka band are discussed. In addition, according to different inter-satellite link configuration schemes, the corresponding simulation observation data are used for 60 d autonomous navigation solution, and the accuracy of the solution results is analyzed. The influence of ranging mode and intersatellite link configuration on autonomous navigation is discussed. The results show that the ranging mode of intersatellite link has no effect on autonomous navigation accuracy, while the configuration of intersatellite link has a cm effect on autonomous navigation accuracy. In the process of intersatellite link design, factors such as navigation accuracy, link load and construction cost should be taken into account in order to achieve the optimal results.
【作者單位】: 西南交通大學(xué)地球科學(xué)與環(huán)境工程學(xué)院;
【基金】:國家自然科學(xué)基金(41504021,41374032) 國家重點(diǎn)研發(fā)計(jì)劃(2016YFB0501900) 中央高;究蒲袠I(yè)務(wù)費(fèi)(2682016CX086)~~
【分類號(hào)】:P228;TN967.1
本文編號(hào):2401524
[Abstract]:Taking Beidou simulation constellation as an object, the changes of visible link number and PDOP value of GEO,IGSO and MEO satellites under different inter-satellite link construction conditions of UHF band and Ka band are discussed. In addition, according to different inter-satellite link configuration schemes, the corresponding simulation observation data are used for 60 d autonomous navigation solution, and the accuracy of the solution results is analyzed. The influence of ranging mode and intersatellite link configuration on autonomous navigation is discussed. The results show that the ranging mode of intersatellite link has no effect on autonomous navigation accuracy, while the configuration of intersatellite link has a cm effect on autonomous navigation accuracy. In the process of intersatellite link design, factors such as navigation accuracy, link load and construction cost should be taken into account in order to achieve the optimal results.
【作者單位】: 西南交通大學(xué)地球科學(xué)與環(huán)境工程學(xué)院;
【基金】:國家自然科學(xué)基金(41504021,41374032) 國家重點(diǎn)研發(fā)計(jì)劃(2016YFB0501900) 中央高;究蒲袠I(yè)務(wù)費(fèi)(2682016CX086)~~
【分類號(hào)】:P228;TN967.1
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