發(fā)布時(shí)間：2019-01-03 16:47

【摘要】：研究太陽(yáng)目標(biāo)特性對(duì)太陽(yáng)望遠(yuǎn)鏡相關(guān)跟蹤圖像穩(wěn)定系統(tǒng)的影響,采用Hinode太陽(yáng)光學(xué)望遠(yuǎn)鏡的觀測(cè)數(shù)據(jù),對(duì)以2min為時(shí)間間隔采樣的5幅太陽(yáng)米粒組織圖像進(jìn)行相關(guān)計(jì)算.針對(duì)國(guó)家天文臺(tái)正在研制的空間太陽(yáng)望遠(yuǎn)鏡(SST)主光學(xué)望遠(yuǎn)鏡(MOT)相關(guān)跟蹤圖像穩(wěn)定系統(tǒng),分析了太陽(yáng)米粒組織隨時(shí)間衍化對(duì)相關(guān)跟蹤系統(tǒng)圖像移動(dòng)計(jì)算精度的影響以及米粒組織動(dòng)態(tài)變化對(duì)望遠(yuǎn)鏡曝光時(shí)間的影響.仿真結(jié)果表明,更換參考圖像時(shí)間不能大于2min,并且在保證算法實(shí)時(shí)性的情況下,選用參考圖像的尺寸與相關(guān)跟蹤系統(tǒng)定位精度成正比.
[Abstract]:The effects of solar target characteristics on the stability system of the correlation tracking image of the solar telescope were studied. Using the observation data of the Hinode solar optical telescope, the correlation calculation was carried out for five solar rice grained tissue images sampled at 2min time intervals. In view of the space solar telescope (SST) main optical telescope (MOT) correlation tracking image stabilization system which is being developed by the National Astronomical Observatory, The influence of the temporal evolution of the solar grain structure on the accuracy of the image movement calculation of the correlation tracking system and the influence of the dynamic change of the grain structure on the exposure time of the telescope are analyzed. The simulation results show that the change time of reference image can not be longer than 2 mins, and the size of reference image is proportional to the positioning accuracy of the correlation tracking system under the condition of ensuring the real-time performance of the algorithm.
【作者單位】： 中國(guó)科學(xué)院國(guó)家天文臺(tái);中國(guó)科學(xué)院太陽(yáng)活動(dòng)重點(diǎn)實(shí)驗(yàn)室(國(guó)家天文臺(tái));中國(guó)科學(xué)院研究生院;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(10778628) 中國(guó)科學(xué)院知識(shí)創(chuàng)新工程資助項(xiàng)目(O531131004)
【分類(lèi)號(hào)】：P111.41

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