【摘要】：針對地球同步中繼衛(wèi)星對地激光通信,設(shè)計了一種包含多重閉合回路的伺服跟蹤系統(tǒng),分析了跟蹤算法的數(shù)學(xué)模型以及用于光斑脫靶量補償?shù)膸?zhí)行器限位比例積分微分控制算法,介紹了星地鏈路激光通信跟蹤系統(tǒng)中伺服閉環(huán)控制系統(tǒng)的組成、各執(zhí)行模塊的性能指標(biāo)和工作模式,給出了伺服閉環(huán)系統(tǒng)和光閉環(huán)系統(tǒng)的工作原理。根據(jù)所設(shè)計的脫靶量提取算法和誤差補償算法,分別在圖像處理模塊和下位機執(zhí)行模塊中編寫了光閉環(huán)跟蹤程序。對整個系統(tǒng)進行靜、動態(tài)環(huán)境下微弱信標(biāo)光的跟蹤實驗測試,最終獲得動態(tài)環(huán)境下±20μrad(3σ,σ為標(biāo)準(zhǔn)差)、靜態(tài)環(huán)境下±7.5μrad(3σ)的跟蹤精度,實驗結(jié)果驗證了所設(shè)計跟蹤回路的可行性及良好的操作性,結(jié)果表明該跟蹤系統(tǒng)具有較高的跟蹤精度。
[Abstract]:A servo tracking system with multiple closed circuits is designed for geosynchronous relay satellite to ground laser communication. The mathematical model of tracking algorithm and the proportional integral differential control algorithm with actuator limit for spot miss distance compensation are analyzed. The composition of servo closed loop control system, the performance index and working mode of each execution module in satellite-ground link laser communication tracking system are introduced. The working principle of servo closed loop system and optical closed loop system is given. According to the designed miss distance extraction algorithm and error compensation algorithm, the optical closed-loop tracking program is written in the image processing module and the lower computer execution module, respectively. The tracking accuracy of 鹵20 渭 rad in dynamic environment and 鹵7.5 渭 rad in static environment is obtained by tracking the weak beacon light in static and dynamic environment. The experimental results verify the feasibility and good operation of the designed tracking loop, and the results show that the tracking system has high tracking accuracy.
【作者單位】： 長春理工大學(xué)空間光電技術(shù)研究所;
【基金】：國家863計劃(2012AA0017)
【分類號】：TN929.1
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本文編號：2515222