...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Dual-mode phase-shifting interferometry based on iterative algorithms
【24h】

Dual-mode phase-shifting interferometry based on iterative algorithms

机译：基于迭代算法的双模相移干涉测量法

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Iterative algorithms are useful for retrieving wavefront phase from vibration disturbed interferograms for phase-shifting interferometry (PSI). But the dependence of convergence on the initial value deviation from the exact value impairs their application in severe vibration. In this paper, performance investigation of a representative iterative algorithm indicates that a higher frame rate of the camera, with matched phase shift, helps in enhancing the success probability of convergence. However, the camera frame rate is limited by its transmission speed and could not be increased easily. To improve the convergence of iterative algorithms, a dualmode (DM) PSI is proposed that utilises the binning function of cameras. In DMPSI, two modes, high-speed and high-resolution modes, work consecutively by switching the camera binning function and two series of interferograms are collected respectively. The wavefront phase could be accurately estimated from high-speed interferograms and then is input to the iterative calculation with high-resolution interferograms as the initial value, and a wavefront phase with high-resolution is achieved ultimately. DMPSI combines the advantages of two complementary modes of cameras to reconstruct an accurate and high-resolution wavefront. Both simulations and a practical measurement verify the enhancement of vibration resistance of iterative algorithms. DMPSI is easy to implement with low cost and good compatibility, predicating a reliable solution for optical wavefront measurement in the severe vibration.
机译：迭代算法可用于从振动检索波前阶段，从振动扰动干扰图进行相移干扰测量（PSI）。但是会聚对初始值偏离的依赖性从精确值损害其在严重振动中的应用。在本文中，代表性迭代算法的性能研究表明，相机的较高帧速率，匹配相移，有助于提高收敛的成功概率。然而，相机帧速率受其传输速度的限制，并且不能容易地增加。为了提高迭代算法的收敛，提出了一种利用相机的分衬功能的双极（DM）PSI。在DMPSI中，分别通过切换相机分频器和两种系列干涉图进行两种模式，高速和高分辨率模式，连续工作，并收集两系列干涉图。可以从高速干涉图准确地估计波前阶段，然后用高分辨率干涉图输入作为初始值的迭代计算，最终实现具有高分辨率的波前相位。 DMPSI结合了两种互补模式的相机的优点，以重建精确和高分辨率的波前。模拟和实际测量验证了迭代算法的抗振性的增强。 DMPSI易于实施，以低成本和良好的兼容性，谓是在严重振动中的光学波前测量的可靠解决方案。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号