Theoretical analysis and simulation of conjugate heights for dual-conjugate AO system in lidar |
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| Authors: | Xueke Ding Jian Rong Hong Bai Xiu Wang Jine Shen Fang Li |
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| Institution: | School of Physical Electronic, University of Electronic Science and Technology of China, Chengdu 610054 |
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| Abstract: | A multi-conjugate adaptive optics (MCAO) can offer a possibility of widening field of view (FOV) characterized by the isoplanatic angle, and the choose of conjugate height becomes a basic problem for MCAO,which influences the size of iosplanatic angle. Considering the application of lidar, the isoplanatic angle's expressions of two deformable mirrors (DMs) MCAO for uplink and downlink are deduced. The effects of conjugate heights for dual-conjugate AO are thoughtfully discussed, and the isoplanatic angles are further analyzed. The results show that the isopanatic angle varies with the conjugate height and reaches the maximum as the conjugate height is at the optimal altitude. Moreover, the optimal conjugate height changes with the propagation distance. |
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| Keywords: | lidar system heights conjugate simulation analysis changes propagation distance results show maximum optimal altitude angles effects downlink expressions deformable mirrors |
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