Linear reconstruction of compensated images: theory and experimental results.
Linear reconstruction of compensated images: theory and experimental results.
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DOI：
10.1364/ao.31.007429
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发表时间：
1992-12
期刊：
影响因子：
1.9
通讯作者：
M. Roggemann;D. Tyler;M. F. Bilmont
中科院分区：
文献类型：
--
作者：
M. Roggemann;D. Tyler;M. F. Bilmont
针对补偿成像系统测量天文图像的后处理问题，提出了线性图像重建技术。线性技术使用平均来克服噪声和反卷积的影响，以消除系统的影响。本文首次报道了四颗单星和一颗双星在可见光波段的补偿图像测量的实验结果，并验证了先前导出的有关补偿光学传递函数统计量与补偿图像光谱信噪比的解析表达式。对一颗角次角预估为0.52弧秒（2.52微角）的明亮双星进行了反褶积分析。
Linear image reconstruction techniques are proposed for postprocessing astronomical images measured with compensated imaging systems. Linear techniques use averaging to overcome the effects of noise and deconvolution to remove system effects. Experimental results from compensated image measurements of four single stars and one binary star at visible wavelengths are reported for the first time, to our knowledge, and a previously derived analytic expression relating the statistics of the compensated optical transfer function to the compensated image spectrum signal-to-noise ratio is verified. The performance of deconvolution on a bright binary star with angular subtense previously estimated to be 0.52 arcsec (2.52 microrad) is demonstrated.