本文選題：脈沖星 + 自主導(dǎo)航�。� 參考：《北京航空航天大學(xué)學(xué)報(bào)》2014年09期

【摘要】：傳統(tǒng)的X射線(xiàn)脈沖星導(dǎo)航系統(tǒng)需要同時(shí)觀測(cè)3~4顆脈沖星,有效載荷的質(zhì)量和功耗極大.針對(duì)航天器環(huán)地飛行中受地球遮擋、探測(cè)器可探測(cè)范圍等因素影響,導(dǎo)致脈沖星并非所有時(shí)刻均可見(jiàn)的現(xiàn)象,提出了單探測(cè)器分時(shí)段實(shí)時(shí)觀測(cè)脈沖星的導(dǎo)航方法.根據(jù)航天器的實(shí)際飛行情況,系統(tǒng)分析探測(cè)器在不同探測(cè)范圍下對(duì)脈沖星實(shí)時(shí)的可見(jiàn)性狀況,從每時(shí)段的可見(jiàn)星中選取單星進(jìn)行導(dǎo)航.仿真表明,該方法可大大提高單探測(cè)器的導(dǎo)航性能,導(dǎo)航位置誤差達(dá)到337m,同時(shí)有效地減小了導(dǎo)航系統(tǒng)的重量,為X射線(xiàn)脈沖星導(dǎo)航的工程實(shí)現(xiàn)提供了參考依據(jù).
[Abstract]:The traditional X-ray pulsar navigation system needs to observe three or four pulsars at the same time. The mass and power consumption of the payload is very high. In view of the phenomenon that the pulsar is not visible at all times due to the influence of earth occlusion and detector detectable range in the orbit of spacecraft, a method for real-time observation of pulsar by single detector in real time is presented in this paper. According to the actual flight conditions of the spacecraft, the real-time visibility of the pulsar under different detection ranges is analyzed systematically, and the single star is selected from the visible star in each period for navigation. The simulation results show that this method can greatly improve the navigation performance of single detector, and the navigation position error is 337m. at the same time, the weight of the navigation system is reduced effectively, which provides a reference for the engineering implementation of X-ray pulsar navigation.
【作者單位】： 北京航空航天大學(xué)宇航學(xué)院;北京航天自動(dòng)控制研究所;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51275027)
【分類(lèi)號(hào)】：P145.6;V448.2
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本文編號(hào)：1845141