【摘要】 相位变更(Phase diversity,PD)波前传感是一种较新的波前传感方法,它使用相对简单的光学系统,运用最优化计算方法,借鉴图像处理中的一些技术手段,在得到波前信息的同时,还可以得到目标的清晰像。PD方法经过20多年的发展,在理论上和技术上日臻完善,已经在空间望远镜共相位调整,目标成像清晰化处理等多个领域得到了应用。但PD方法也存在计算量大,探测动态范围小等缺点,其在实际光学系统中的应用仍有待于进一步的研究和探讨。更多还原

【Abstract】 Phase diversity is one kind of advanced wavefront sensing technique.The optical system involved is relatively simple.It makes use of the methods of optimization and image processing,which can jointly estimate the phase aberration and image with the focused and the additional defocused image of the same extended object.The method of phase diversity has been used in cophasing the segmented telescopes and recovering high quality image.The performance of the method is not yet perfect because its computations have been perceived as being too burdensome,and the range of wavefront detected is no more than one wave.There are still many problems to be discussed and studied for the application in the future.更多还原