本文選題：光通信　切入點(diǎn)：捕獲　出處：《中國激光》2017年08期 　論文類型：期刊論文

【摘要】：在介紹捕獲、跟蹤、瞄準(zhǔn)(ATP)精跟蹤子系統(tǒng)結(jié)構(gòu)、控制原理及控制算法的基礎(chǔ)上,通過搭建半物理模型來分析不同分辨率數(shù)模轉(zhuǎn)換器對應(yīng)的跟蹤性能,分別對同一位置光束與加入擾動(dòng)后的光束進(jìn)行跟蹤對比實(shí)驗(yàn)。結(jié)合精跟蹤控制系統(tǒng)的信號傳輸,分析不同分辨率的數(shù)模轉(zhuǎn)換器對ATP系統(tǒng)跟蹤精度的影響。實(shí)驗(yàn)結(jié)果表明,數(shù)模轉(zhuǎn)換器的分辨率越高,ATP系統(tǒng)的跟蹤性能就越好;使用14位數(shù)模轉(zhuǎn)換器時(shí),繼續(xù)增加分辨率,ATP系統(tǒng)的跟蹤精度沒有得到顯著提升。對跟蹤后的光斑質(zhì)心信號進(jìn)行頻譜分量統(tǒng)計(jì),發(fā)現(xiàn)干擾抑制帶寬之外的頻段內(nèi)數(shù)模轉(zhuǎn)換器的分辨率與其對應(yīng)的頻譜分量成正比,因此需要進(jìn)一步提高精跟蹤系統(tǒng)的干擾抑制帶寬來實(shí)現(xiàn)更高精度的跟蹤。
[Abstract]:On the basis of introducing the structure, control principle and control algorithm of capture, tracking and aiming ATP fine tracking subsystem, the tracking performance of digital-to-analog converter with different resolution is analyzed by building a semi-physical model. The experiments of tracking the same position beam and the beam with disturbance are carried out respectively. Combining with the signal transmission of the precision tracking control system, the influence of different resolution digital-to-analog converters on the tracking accuracy of ATP system is analyzed. The experimental results show that, The higher the resolution of the digital-to-analog converter, the better the tracking performance of the ATP system; when using a 14-digit digital-to-analog converter, The tracking accuracy of the ATP system has not been significantly improved by increasing the resolution. The spectral components of the centroid signal of the spot after tracking have been counted. It is found that the resolution of the DAC in the frequency band outside the interference suppression bandwidth is proportional to the corresponding spectral component, so it is necessary to further improve the interference suppression bandwidth of the precision tracking system to achieve more accurate tracking.
【作者單位】： 中國科學(xué)院上海技術(shù)物理研究所空間主動(dòng)光電技術(shù)重點(diǎn)實(shí)驗(yàn)室;中國科學(xué)院大學(xué);
【基金】：國家自然科學(xué)基金(61302181)
【分類號】：TN792;TN929.1

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