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Field experiment and image reconstruction using a Fourier telescopy imaging system over a 600-m-long horizontal path

机译:使用傅立叶望远镜成像系统在600米长的水平路径上进行野外实验和图像重建

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摘要

To confirm the effect of uplink atmospheric turbulence on Fourier telescopy (FT), we designed a system for far-field imaging, utilizing a T-type laser transmitting configuration with commercially available hardware, except for a green imaging laser. The horizontal light transmission distance for both uplink and downlink was similar to 300 m. For both the transmitting and received beams, the height upon the ground was below 1 m. The imaging laser's pointing accuracy was similar to 9.3 mu rad. A novel image reconstruction approach was proposed, yielding significantly improved quality and Strehl ratio of reconstructed images. From the reconstruction result, we observed that the tip/tilt aberration is tolerated by the FT system even for Changchun's atmospheric coherence length parameter (r0) below 3 cm. The resolution of the reconstructed images was similar to 0.615 mu rad. (C) 2016 Optical Society of America
机译:为了确认上行大气湍流对傅立叶望远镜(FT)的影响,我们设计了一种用于远场成像的系统,该系统利用T型激光传输配置以及绿色成像激光器以外的商用硬件进行配置。上行链路和下行链路的水平光传输距离都类似于300 m。对于发射光束和接收光束,地面上的高度均低于1 m。成像激光器的指向精度接近9.3μrad。提出了一种新颖的图像重建方法,可以显着提高重建图像的质量和斯特列尔比。从重建结果中,我们观察到即使对于长春的大气相干长度参数(r0)低于3 cm,FT系统也可以容许倾斜/倾斜像差。重建图像的分辨率类似于0.615μrad。 (C)2016美国眼镜学会

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