【摘要】：使用低軌天基光學(xué)望遠(yuǎn)鏡掃描式觀測低軌空間碎片,由于兩者的相對運(yùn)動較快,只能獲得很短時間內(nèi)的角度觀測值(甚短觀測弧段),使用傳統(tǒng)的Gauss方法和Gooding方法很難得到精確的空間碎片初始軌道。為此,文章提出了一種新的方法,在給定的一組角度觀測值中,通過搜索其中2個時刻的距離信息,將純角度的初始軌道確定問題轉(zhuǎn)換為基于2個位置矢量的初始軌道確定問題;再利用其他時刻的角度觀測值進(jìn)行檢核和約束,篩選出最優(yōu)的初始軌道結(jié)果。利用文章方法對空間碎片在10~60s內(nèi)的503個觀測弧段進(jìn)行處理,結(jié)果表明,其定軌誤差與角度觀測值變化率有關(guān)。將文章方法所得結(jié)果與Gauss方法和Gooding方法進(jìn)行比較,證明文章方法在解的成功率和精度上都顯著優(yōu)于其他2種方法,能很好地確定空間碎片的初始軌道。
[Abstract]:The scanning observation of low-orbit space debris using low-orbit space-based optical telescopes, due to their relatively rapid motion, results in only a very short period of angular observations (very short observation arcs), It is difficult to obtain accurate initial orbit of space debris by using traditional Gauss method and Gooding method. In this paper, a new method is proposed to search for the distance information for two of the given set of angle observations. The problem of determining the initial orbit of pure angle is transformed into the problem of determining the initial orbit based on two position vectors. Then the angle observations at other times are used to check and constrain, and the optimal initial orbital results are obtained. In this paper, 503 observation arcs of space debris in 10 ~ 60 s are processed. The results show that the orbit determination error is related to the rate of change of angle observation value. Compared with the Gauss method and the Gooding method, it is proved that the proposed method is superior to the other two methods in the success rate and accuracy of the solution, and the initial orbit of space debris can be well determined.
【作者單位】： 武漢大學(xué)測繪學(xué)院;北京空間飛行器總體設(shè)計部;
【基金】：國家自然科學(xué)基金(41474021)
【分類號】：V528
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本文編號：2400203