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Experimental validation of Fourier-transform wave-front reconstruction at the Palomar Observatory

机译:帕洛玛天文台傅里叶变换波前重建的实验验证

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Wave-front reconstruction with use of the Fourier transform has been validated through theory and simulation. This method provides a dramatic reduction in computational costs for large adaptive (AO) systems. Because such a reconstructor can be expressed as a matrix, it can be used as an alternative in a matrix-based AO control system. This was done with the Palomar Observatory AO system on the 200-in. Hale telescope. Results of these tests indicate that Fourier-transform wave-front, reconstruction works in a real system. For both bright and dim stars, a Hudgin-geometry Fourier-transform method produced performance comparable to that of the Palomar Adaptive Optics least squares. The Fried-geometry method had a noticeable Strehl ratio performance degradation of 0.043 in the K band (165-nm rms wave-front error added in quadrature) on a dim star. (C) 2003 Optical Society of America. [References: 7]
机译:理论和仿真已验证了使用傅立叶变换进行波前重建。此方法大大降低了大型自适应(AO)系统的计算成本。由于这种重构器可以表示为矩阵,因此可以用作基于矩阵的AO控制系统的替代方案。这是通过200英寸的Palomar天文台AO系统完成的。黑尔望远镜。这些测试的结果表明,傅立叶变换波前重建在实际系统中有效。对于亮星和暗星,Hudgin-几何傅立叶变换方法产生的性能可与Palomar Adaptive Optics最小二乘法相媲美。 Fried-geometry方法在昏暗的恒星上的K波段(165nm rms的波前误差正交增加)中的Strehl比性能下降了0.043。 (C)2003年美国眼镜学会。 [参考:7]

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