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SHEARED-BEAM IMAGING - AN EVALUATION OF ITS OPTICAL COMPENSATION OF THICK ATMOSPHERIC TURBULENCE

机译：剪切束成像-厚大气湍流光学补偿的评估

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Sheared-beam imaging (SBI) should compensate the effects of an idealized layer of turbulence located either in a transmitter/detector plane or in an object plane. This motivated the study of optical compensation of SBI in the presence of uniformly distributed turbulence over long horizontal paths in the cases of ideally smooth and ideally rough extended objects. The phase error along a one-dimensional wave front resulting from SBI observation is computed numerically in the long-path regime and is compared with that of an equivalent conventional system for the case of a large smooth object. It is found that for the conditions considered the phase errors of the SBI system are greater than those of a conventional system. In the case of an ideally rough object the extra information furnished by the SBI observations does not lead to data that can be inverted to compute an image by the conventional shearing-interferometric algorithm. The phase errors in imaging a point reflector, however, are perfectly compensated. [References: 20]
机译：剪切光束成像（SBI）应该补偿位于发射器/检测器平面或物体平面中的理想湍流层的影响。在理想的光滑和理想的粗糙扩展物体的情况下，这激发了在长水平路径上均匀分布的湍流存在下SBI的光学补偿的研究。由SBI观测产生的沿一维波阵面的相位误差在长路径状态下进行了数值计算，并与较大光滑物体情况下的等效传统系统进行了比较。发现对于所考虑的条件，SBI系统的相位误差大于常规系统的相位误差。在理想的粗糙物体的情况下，SBI观测值提供的额外信息不会导致可以通过常规剪切干涉算法将其反转以计算图像的数据。但是，对点反射器成像的相位误差可以得到完美补偿。 [参考：20]

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