提出一种基于相位差异法的衍射光学系统波前反演误差分析方法。从衍射光学系统波前反演模型出发,分析了产生波前反演误差的物理因素;对各影响因素进行了理论建模,建立了衍射光学系统波前反演误差分析方法。以某衍射光学系统为应用实例,分析了各因素对波前反演误差的影响规律,并验证了误差分析模型与方法。实验结果表明,模型分析结果与实际误差之间的平均偏差小于13.5%,可为衍射光学系统的空间应用提供支撑。

A wavefront reconstruction error analysis method based on the phase diversity (PD) method for diffraction optical systems is proposed. Based on the wavefront reconstruction model of the diffraction optical system, the physical factors which cause wavefront reconstruction error are analyzed, and the influencing factors are theoretically modeled. Furthermore, the analysis method for wavefront reconstruction error is established. Taking a diffraction optical system as an application example, the influences of various physical factors on the wavefront reconstruction error are analyzed, and the error analysis model and method are verified. The experimental results show that the average deviation between the wavefront reconstruction error obtained by the error analysis model and the actual error is less than 13.5%. The method proposed in this paper can be used as the basis of application of space based diffraction optical systems.