【摘要】：為了滿足高分辨率對(duì)地觀測(cè)衛(wèi)星上設(shè)備安裝姿態(tài)高精度測(cè)量的需求,設(shè)計(jì)了一種由二維龍門導(dǎo)軌、精密轉(zhuǎn)臺(tái)和CCD成像輔助自準(zhǔn)直經(jīng)緯儀構(gòu)成的高精度自動(dòng)姿態(tài)測(cè)量系統(tǒng)。該系統(tǒng)采用了多傳感器數(shù)據(jù)融合的高精度測(cè)量算法,融合了自準(zhǔn)直經(jīng)緯儀的俯仰角、偏航角數(shù)據(jù),精密轉(zhuǎn)臺(tái)的數(shù)據(jù)以及CCD圖像數(shù)據(jù),可以精確計(jì)算出遠(yuǎn)間距異面直線間的夾角。同時(shí)基于理論安裝數(shù)據(jù)驅(qū)動(dòng)的經(jīng)緯儀自動(dòng)定位方法,可以實(shí)現(xiàn)經(jīng)緯儀沿導(dǎo)軌自動(dòng)定位到最佳準(zhǔn)直位置和朝向,再通過局部圖像識(shí)別可以搜索出立方鏡鏡面法線的指向,最終實(shí)現(xiàn)精確準(zhǔn)直。試驗(yàn)中,通過測(cè)量標(biāo)準(zhǔn)17面棱體與標(biāo)準(zhǔn)值比對(duì),得到最大偏差為4.1″,標(biāo)準(zhǔn)差為3.3″;通過對(duì)模擬衛(wèi)星上的立方鏡進(jìn)行搜索,可以實(shí)現(xiàn)自動(dòng)化測(cè)量。該系統(tǒng)已經(jīng)在我國(guó)高分二號(hào)衛(wèi)星總裝測(cè)試中進(jìn)行了應(yīng)用,保障了高分二號(hào)衛(wèi)星的裝配檢測(cè)精度。
[Abstract]:In order to meet the requirement of high resolution attitude measurement on earth observation satellite, a high precision automatic attitude measurement system is designed, which is composed of two dimensional gantry guide rail, precision turntable and CCD imaging auxiliary auto-collimating theodolite. The system adopts a high precision measurement algorithm of multi-sensor data fusion, which combines the pitch angle, yaw angle data, precision turntable data and CCD image data of the self-collimating theodolite, and can accurately calculate the angle between the distant cross-plane lines. At the same time, the theodolite automatic positioning method based on the theory installation data drive can realize the theodolite automatically locating to the best collimation position and orientation along the guide rail, and then can search the direction of the cubic mirror normal line by local image recognition. Finally, accurate collimation is achieved. In the experiment, the maximum deviation is 4.1 "and the standard deviation is 3.3" by comparing the standard 17 prism with the standard value, and the automatic measurement can be realized by searching the cubic mirror on the simulation satellite. The system has been applied in the assembly test of Gaofeng 2 satellite in China, which ensures the precision of assembly and detection of Gaofen 2 satellite.
【作者單位】： 北京衛(wèi)星環(huán)境工程研究所;北京市航天產(chǎn)品智能裝配技術(shù)與裝備工程技術(shù)中心;
【基金】：國(guó)家高分專項(xiàng)天基部分資助項(xiàng)目(科工高分[2011]1199號(hào))
【分類號(hào)】：TP391.41;V465

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