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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。
Phase diversity (PD) Wavefront sensing is a newer method of wavefront sensing. It uses a relatively simple optical system, uses the most optimal calculation method, draws on some technical means in image processing, Before the information at the same time, you can get a clear picture of the target. After more than 20 years of development, the PD method has been improved theoretically and technically and has been applied in many fields such as the co-phasing of the space telescope and the target imaging sharpening. However, the PD method also has the disadvantages of large computation volume and small detection dynamic range, and its application in practical optical systems remains to be further studied and discussed.