公开(公告)号：US06496252B1

公开(公告)日：2002-12-17

申请号：US09579993

申请日：2000-05-26

Applicant: Matthew R. Whiteley

Inventor： Matthew R. Whiteley

IPC: G01J100

CPC classification number: G01N21/41

Abstract: An optical configuration and related analysis techniques are presented that provide a practical method for determining the Rytov parameter based on the difference of variances for the differential image motion (average wavefront gradient or wavefront tilt) between two receiving apertures. The Rytov parameter is the log-amplitude variance predicted by an approximate solution to Maxwell's equations for propagation through media with random index of refraction (Rytov theory). It is a useful metric of the optical effects for extended turbulence propagation and is a leading indicator of the performance limitations of adaptive optical compensation devices not related to the transverse coherence diameter. A time-duplex alternative apparatus and a single source alternative apparatus are also disclosed.

Abstract translation: 提出了一种光学配置和相关分析技术，其提供了基于两个接收孔径之间的差分图像运动（平均波前梯度或波前倾斜）的方差的差异来确定Rytov参数的实际方法。 Rytov参数是通过对具有随机折射率折射率的介质传播的麦克斯韦方程的近似解（Rytov理论）预测的对数幅度方差。 它是扩展湍流传播的光学效应的有用指标，并且是与横向相干直径无关的自适应光学补偿装置的性能限制的领先指标。 还公开了时间双工替代设备和单源替代设备。